Grizzly Planer G0790 User Manual
MODEL G0790  
121⁄2" BENCHTOP PLANER  
w/DUST COLLECTION  
OWNER'S MANUAL  
(For models manufactured since 9/15)  
3092372  
COPYRIGHT © JANUARY, 2015 BY GRIZZLY INDUSTRIAL, INC., REVISED SEPTEMBER, 2015 (MN)  
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE  
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.  
#MNWKAW17040 PRINTED IN CHINA  
V2.09.15  
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Table of Contents  
INTRODUCTION............................................... 2  
SECTION 5: ACCESSORIES......................... 23  
Contact Info.................................................... 2  
Manual Accuracy ........................................... 2  
Identification................................................... 3  
Controls & Components................................. 4  
G0790 Data Sheet......................................... 5  
SECTION 6: MAINTENANCE......................... 25  
Schedule...................................................... 25  
Cleaning & Protecting.................................. 25  
Lubrication ................................................... 25  
SECTION 7: SERVICE ................................... 27  
Troubleshooting ........................................... 27  
Knife Replacement....................................... 29  
Replacing Motor Brushes ............................ 31  
Replacing & Tensioning V-Belt.................... 31  
Scale Calibration.......................................... 33  
Feed Rollers................................................. 33  
Table Height Adjustment ............................. 34  
SECTION 1: SAFETY....................................... 7  
Safety Instructions for Machinery .................. 7  
Additional Safety for Planers ......................... 9  
SECTION 2: POWER SUPPLY...................... 10  
SECTION 3: SETUP ....................................... 12  
Unpacking.................................................... 12  
Needed for Setup......................................... 12  
Inventory ...................................................... 12  
Cleanup........................................................ 13  
Site Considerations...................................... 13  
Bench Mounting........................................... 14  
Assembly ..................................................... 14  
Dust Collection............................................. 15  
Test Run ...................................................... 16  
SECTION 8: WIRING...................................... 35  
Wiring Safety Instructions............................ 35  
Wiring Diagram & Electrical Components ... 36  
SECTION 9: PARTS....................................... 37  
Main ............................................................. 37  
Labels & Cosmetics..................................... 40  
WARRANTY & RETURNS ............................. 43  
SECTION 4: OPERATIONS ........................... 17  
Operation Overview..................................... 17  
Workpiece Inspection................................... 18  
Wood Types................................................. 18  
Planing Tips................................................. 19  
Cutting Problems ......................................... 19  
Depth of Cut................................................. 20  
Feeding Workpiece ..................................... 21  
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INTRODUCTION  
Contact Info  
Manual Accuracy  
We stand behind our machines! If you have ques-  
tions or need help, contact us with the information  
below. Before contacting, make sure you get the  
serial number and manufacture date from the  
machine ID label. This will help us help you faster.  
We are proud to provide a high-quality owner’s  
manual with your new machine!  
We made every effort to be exact with the instruc-  
tions, specifications, drawings, and photographs  
in this manual. Sometimes we make mistakes, but  
our policy of continuous improvement also means  
that sometimes the machine you receive is  
slightly different than shown in the manual.  
Grizzly Technical Support  
1203 Lycoming Mall Circle  
Muncy, PA 17756  
Phone: (570) 546-9663  
Email: techsupport@grizzly.com  
If you find this to be the case, and the difference  
between the manual and machine leaves you  
confused or unsure about something, check our  
website for an updated version. We post current  
manuals and manual updates for free on our web-  
site at www.grizzly.com.  
We want your feedback on this manual. What did  
you like about it? Where could it be improved?  
Please take a few minutes to give us feedback.  
Grizzly Documentation Manager  
P.O. Box 2069  
Bellingham, WA 98227-2069  
Email: manuals@grizzly.com  
Alternatively, you can call our Technical Support  
for help. Before calling, make sure you write down  
the Manufacture Date and Serial Number from  
the machine ID label (see below). This information  
is required for us to provide proper tech support,  
and it helps us determine if updated documenta-  
tion is available for your machine.  
Manufacture Date  
Serial Number  
-2-  
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Identification  
Become familiar with the names and locations of the controls and features shown below to better understand  
the instructions in this manual.  
Return Rollers  
Cutterhead  
Elevation Crank  
Cord Wrap  
Cutterhead Guard  
ON/OFF Switch  
Reset Button  
Dust  
Port  
Table  
Cutterhead  
Elevation Scale  
Motor Brush  
Housing  
Model G0790 controls and components.  
To reduce your risk of  
serious injury, read this  
entire manual BEFORE  
using machine.  
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Controls &  
Components  
F
D
To reduce your risk of  
serious injury, read this  
entire manual BEFORE  
using machine.  
E
Refer to Figures 1–2 and the following descrip-  
tions to become familiar with the basic controls of  
this machine.  
Figure 2. Elevation controls and return rollers.  
D. Cutterhead Elevation Crank: Raises and  
lowers cutterhead. Turning clockwise raises  
cutterhead; turning counterclockwise lowers  
it.  
B
E. Cutterhead Elevation Scale: Shows the  
elevation of the cutterhead above the table.  
The measurement indicated by the red arrow  
is the effective thickness of the board after  
planing.  
C
F. Return Rollers: For assistant to slide  
workpiece back to operator following planing  
operation.  
A
Figure 1. ON/OFF switch and reset button.  
A. ON/OFF Switch: Turns motor ON when  
flipped up; turns motor OFF when pressed  
down.  
B. ON/OFF Switch Disabling Key: Disables  
switch when yellow key is removed so motor  
cannot start.  
C. Reset Button: Allows machine to be restart-  
ed after thermal overload protection has  
tripped the motor. To reset the button, place  
ON/OFF switch in OFF position, wait a few  
minutes for motor to cool, then press reset  
button. If button does not stay depressed,  
allow motor to cool off longer, then try again.  
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MACHINE DATA  
SHEET  
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901  
MODEL G0790 12‐1/2" BENCHTOP PLANER WITH DUST  
COLLECTION  
Product Dimensions:  
Weight................................................................................................................................................................ 65 lbs.  
Width (side-to-side) x Depth (front-to-back) x Height............................................................... 23-1/2 x 19 x 18-1/2 in.  
Footprint (Length x Width)..................................................................................................................... 22-1/2 x 13 in.  
Shipping Dimensions:  
Type..................................................................................................................................................... Cardboard Box  
Content........................................................................................................................................................... Machine  
Weight................................................................................................................................................................ 72 lbs.  
Length x Width x Height....................................................................................................................... 25 x 16 x 18 in.  
Must Ship Upright................................................................................................................................................... Yes  
Electrical:  
Power Requirement........................................................................................................... 120V, Single-Phase, 60 Hz  
Prewired Voltage.................................................................................................................................................. 120V  
Full-Load Current Rating........................................................................................................................................ 15A  
Minimum Circuit Size.............................................................................................................................................. 20A  
Connection Type....................................................................................................................................... Cord & Plug  
Power Cord Included.............................................................................................................................................. Yes  
Power Cord Length................................................................................................................................................. 6 ft.  
Power Cord Gauge......................................................................................................................................... 14 AWG  
Plug Included.......................................................................................................................................................... Yes  
Included Plug Type................................................................................................................................................ 5-15  
Switch Type.................................................................................................. Paddle Switch w/Removable Safety Key  
Motors:  
Universal  
Type......................................................................................................................... Universal Motor w/Brushes  
Horsepower................................................................................................................................................ 2 HP  
Phase............................................................................................................................................ Single-Phase  
Amps............................................................................................................................................................ 15A  
Speed............................................................................................................................................. 17,500 RPM  
Power Transfer .................................................................................................................................. Belt Drive  
Bearings.................................................................................................... Shielded & Permanently Lubricated  
Main Specifications:  
Main Specifications  
Planer Size............................................................................................................................................. 12.5 in.  
Max. Cut Width.................................................................................................................................... 12-1/2 in.  
Min. Stock Thickness.............................................................................................................................. 5/16 in.  
Max. Stock Thickness............................................................................................................................ 4-1/2 in.  
Number of Cuts Per Inch................................................................................................................................ 60  
Number of Cuts Per Minute..................................................................................................................... 17,500  
Cutterhead Speed............................................................................................................................. 8750 RPM  
Planing Feed Rate................................................................................................................................. 26 FPM  
Max. Cut Depth Planing Full Width......................................................................................................... 1/32 in.  
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Cutterhead Info  
Cutterhead Type...................................................................................................................................... 2 Knife  
Cutterhead Diameter .................................................................................................................................. 2 in.  
Number of Knives............................................................................................................................................. 2  
Knife Type................................................................................................................................ HSS, Reversible  
Knife Size Length................................................................................................................................ 12-1/2 in.  
Knife Size Width....................................................................................................................................... 1/2 in.  
Knife Size Thickness.............................................................................................................................. 1/16 in.  
Table Info  
Table Bed Size Length........................................................................................................................ 12-3/4 in.  
Table Bed Size Width.......................................................................................................................... 12-1/2 in.  
Table Bed Size Thickness..................................................................................................................... 3-5/8 in.  
Construction  
Table........................................................................................................................................... Stainless Steel  
Body................................................................................................................................................... Aluminum  
Cutterhead Assembly................................................................................................................................. Steel  
Infeed Roller............................................................................................................................... Rubber & Steel  
Outfeed Roller............................................................................................................................ Rubber & Steel  
Paint Type/Finish....................................................................................................................... Powder Coated  
Other  
Measurement Scale....................................................................................................................... Inch & Metric  
Number of Dust Ports....................................................................................................................................... 1  
Dust Port Size........................................................................................................................................ 2-3/8 in.  
Other Specifications:  
Country of Origin ................................................................................................................................................ China  
Warranty ........................................................................................................................................................... 1 Year  
Serial Number Location ................................................................................................................................. ID Panel  
Sound Rating ..................................................................................................................................................... 95 dB  
ISO 9001 Factory .................................................................................................................................................. Yes  
CSA, ETL, or UL Certified/Listed ................................................................................................................. Yes (ETL)  
Features:  
4-1/2" maximum cutting height  
Magnetic handles for changing knives  
Built-in cord wrap  
12-1/2" x 12-3/4" table size  
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SECTION 1: SAFETY  
For Your Own Safety, Read Instruction  
Manual Before Operating This Machine  
The purpose of safety symbols is to attract your attention to possible hazardous conditions.  
This manual uses a series of symbols and signal words intended to convey the level of impor-  
tance of the safety messages. The progression of symbols is described below. Remember that  
safety messages by themselves do not eliminate danger and are not a substitute for proper  
accident prevention measures. Always use common sense and good judgment.  
Indicates an imminently hazardous situation which, if not avoided,  
WILL result in death or serious injury.  
Indicates a potentially hazardous situation which, if not avoided,  
COULD result in death or serious injury.  
Indicates a potentially hazardous situation which, if not avoided,  
MAY result in minor or moderate injury. It may also be used to alert  
against unsafe practices.  
This symbol is used to alert the user to useful information about  
proper operation of the machine.  
NOTICE  
Safety Instructions for Machinery  
OWNER’S MANUAL. Read and understand this ELECTRICAL EQUIPMENT INJURY RISKS. You  
owner’s manual BEFORE using machine.  
can be shocked, burned, or killed by touching live  
electrical components or improperly grounded  
machinery. To reduce this risk, only allow qualified  
service personnel to do electrical installation or  
repair work, and always disconnect power before  
accessing or exposing electrical equipment.  
TRAINED OPERATORS ONLY. Untrained oper-  
ators have a higher risk of being hurt or killed.  
Only allow trained/supervised people to use this  
machine. When machine is not being used, dis-  
connect power, remove switch keys, or lock-out  
machine to prevent unauthorized use—especially  
around children. Make workshop kid proof!  
DISCONNECT POWER FIRST. Always discon-  
nect machine from power supply BEFORE making  
adjustments, changingtooling, orservicingmachine.  
This prevents an injury risk from unintended startup  
or contact with live electrical components.  
DANGEROUS ENVIRONMENTS. Do not use  
machinery in areas that are wet, cluttered, or have  
poor lighting. Operating machinery in these areas  
greatly increases the risk of accidents and injury.  
EYE PROTECTION. Always wear ANSI-approved  
safety glasses or a face shield when operating or  
observing machinery to reduce the risk of eye  
injury or blindness from flying particles. Everyday  
eyeglasses are NOT approved safety glasses.  
MENTAL ALERTNESS REQUIRED. Full mental  
alertness is required for safe operation of machin-  
ery. Never operate under the influence of drugs or  
alcohol, when tired, or when distracted.  
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WEARING PROPER APPAREL. Do not wear FORCING MACHINERY. Do not force machine.  
clothing, apparel or jewelry that can become  
entangled in moving parts. Always tie back or  
cover long hair. Wear non-slip footwear to reduce  
risk of slipping and losing control or accidentally  
contacting cutting tool or moving parts.  
It will do the job safer and better at the rate for  
which it was designed.  
NEVER STAND ON MACHINE. Serious injury  
may occur if machine is tipped or if the cutting  
tool is unintentionally contacted.  
HAZARDOUS DUST. Dust created by machinery  
operations may cause cancer, birth defects, or  
long-term respiratory damage. Be aware of dust  
hazards associated with each workpiece mate-  
rial. Always wear a NIOSH-approved respirator to  
reduce your risk.  
STABLE MACHINE. Unexpected movement dur-  
ing operation greatly increases risk of injury or  
loss of control. Before starting, verify machine is  
stable and mobile base (if used) is locked.  
USE RECOMMENDED ACCESSORIES. Consult  
this owner’s manual or the manufacturer for rec-  
ommended accessories. Using improper acces-  
sories will increase the risk of serious injury.  
HEARING PROTECTION. Always wear hear-  
ing protection when operating or observing loud  
machinery. Extended exposure to this noise  
without hearing protection can cause permanent  
hearing loss.  
UNATTENDED OPERATION. To reduce the  
risk of accidental injury, turn machine OFF and  
ensure all moving parts completely stop before  
walking away. Never leave machine running  
while unattended.  
REMOVE ADJUSTING TOOLS. Tools left on  
machinery can become dangerous projectiles  
upon startup. Never leave chuck keys, wrenches,  
or any other tools on machine. Always verify  
removal before starting!  
MAINTAIN WITH CARE. Follow all maintenance  
instructions and lubrication schedules to keep  
machine in good working condition. A machine  
that is improperly maintained could malfunction,  
leading to serious personal injury or death.  
USE CORRECT TOOL FOR THE JOB. Only use  
this tool for its intended purpose—do not force  
it or an attachment to do a job for which it was  
not designed. Never make unapproved modifica-  
tions—modifying tool or using it differently than  
intended may result in malfunction or mechanical  
failure that can lead to personal injury or death!  
DAMAGED PARTS. Regularly inspect machine  
for damaged, loose, or mis-adjusted parts—or  
any condition that could affect safe operation.  
Immediately repair/replace BEFORE operating  
machine. For your own safety, DO NOT operate  
machine with damaged parts!  
AWKWARD POSITIONS. Keep proper footing  
and balance at all times when operating machine.  
Do not overreach! Avoid awkward hand positions  
that make workpiece control difficult or increase  
the risk of accidental injury.  
MAINTAIN POWER CORDS. When disconnect-  
ing cord-connected machines from power, grab  
and pull the plug—NOT the cord. Pulling the cord  
may damage the wires inside. Do not handle  
cord/plug with wet hands. Avoid cord damage by  
keeping it away from heated surfaces, high traffic  
areas, harsh chemicals, and wet/damp locations.  
CHILDREN & BYSTANDERS. Keep children and  
bystanders at a safe distance from the work area.  
Stop using machine if they become a distraction.  
GUARDS & COVERS. Guards and covers reduce  
accidental contact with moving parts or flying  
debris. Make sure they are properly installed,  
undamaged, and working correctly BEFORE  
operating machine.  
EXPERIENCING DIFFICULTIES. If at any time  
you experience difficulties performing the intend-  
ed operation, stop using the machine! Contact our  
Technical Support at (570) 546-9663.  
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Additional Safety for Planers  
PLANER INJURY RISKS. Familiarize yourself GRAIN DIRECTION. Planing across the grain  
with the main injury risks associated with plan- is hard on the planer and may cause kickback.  
ers—always use common sense and good judge- Plane in the same direction or at a slight angle  
ment to reduce your risk of injury. Main injury with the wood grain.  
risks from planers: amputation/lacerations from  
contact with the moving cutterhead, entangle- PLANING CORRECT MATERIAL. Only plane  
ment/crushing injuries from getting caught in natural wood stock with this planer. DO NOT  
moving parts, blindness or eye injury from flying plane MDF, OSB, plywood, laminates or other  
wood chips, or impact injuries from workpiece synthetic materials that can break up inside the  
kickback.  
planer and be ejected towards the operator.  
KICKBACK. Know how to reduce the risk of kick- LOOKING INSIDE PLANER. Wood chips fly  
back and kickback-related injuries. “ Kickback” around inside the planer at a high rate of speed  
occurs during the operation when the workpiece is during operation. To avoid injury from flying mate-  
ejected from the machine at a high rate of speed. rial, DO NOT look inside planer during operation.  
Kickback is commonly caused by poor workpiece  
selection, unsafe feeding techniques, or improper CUTTING LIMITATIONS. To reduce the risk of  
machine setup/maintenance. Kickback injuries kickback hazards or damage to the machine, do  
typically occur as follows: (1) operator/bystanders not exceed the maximum depth of cut or minimum  
are struck by the workpiece, resulting in impact board length and thickness found in the Data  
injuries (i.e., blindness, broken bones, bruises, Sheet. Only feed one board at a time.  
death); (2) operator’s hands are pulled into blade,  
resulting in amputation or severe lacerations.  
INFEED ROLLER CLEARANCE. The infeed  
roller is designed to pull material into the spinning  
REACHING INSIDE PLANER. Never remove cutterhead. To reduce the risk of entanglement,  
guards/covers or reach inside the planer during keep hands, clothing, jewelry, and long hair away  
operation or while connected to power. You could from the infeed roller during operation.  
be seriously injured if you accidentally touch the  
spinning cutterhead or get entangled in moving FEED WORKPIECE PROPERLY. To reduce the  
parts. If a workpiece becomes stuck or sawdust risk of kickback, never start planer with workpiece  
removal is necessary, turn planer OFF and dis- touching cutterhead. Allow cutterhead to reach  
connect power before clearing.  
full speed before feeding, and do not change feed  
speed during cutting operation.  
DULL/DAMAGED KNIVES/INSERTS. Only use  
sharp, undamaged knives/inserts. Dull or dam- WORKPIECE SUPPORT. To reduce the risk of  
aged knives/inserts increase the risk of kickback. kickback, always make sure workpiece can move  
completely across table without rocking or tipping.  
INSPECTING STOCK. To reduce the risk of Use auxiliary support stands for long stock.  
kickback injuries or machine damage, thoroughly  
inspect and prepare the workpiece before cutting. SECURE KNIVES/INSERTS. Loose knives or  
Verify workpiece is free of nails, staples, loose improperly set inserts can become dangerous  
knots or foreign material. Workpieces with minor projectiles or cause machine damage. Always  
warping should be jointed first or planed with the verify knives/inserts are secure and properly  
cupped side facing the infeed table.  
adjusted before operation.  
BODY PLACEMENT. Stand to one side of planer  
during the entire operation to avoid getting hit if  
kickback occurs.  
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SECTION 2: POWER SUPPLY  
Availability  
Before installing the machine, consider the avail-  
ability and proximity of the required power supply  
circuit. If an existing circuit does not meet the  
requirements for this machine, a new circuit must  
be installed. To minimize the risk of electrocution,  
fire, or equipment damage, installation work and  
electrical wiring must be done by an electrician or  
qualified service personnel in accordance with all  
applicable codes and standards.  
Serious injury could occur if you connect  
machine to power before completing setup  
process. DO NOT connect to power until  
instructed later in this manual.  
Circuit Requirements  
This machine is prewired to operate on a power  
supply circuit that has a verified ground and meets  
the following requirements:  
Nominal Voltage .................... 110V, 115V, 120V  
Cycle..........................................................60 Hz  
Phase........................................... Single-Phase  
Power Supply Circuit ......................... 20 Amps  
Electrocution, fire, or  
equipment damage may  
occur if machine is not  
correctly grounded and  
connected to the power  
supply.  
A power supply circuit includes all electrical  
equipment between the breaker box or fuse panel  
in the building and the machine. The power sup-  
ply circuit used for this machine must be sized to  
safely handle the full-load current drawn from the  
machine for an extended period of time. (If this  
machine is connected to a circuit protected by  
fuses, use a time delay fuse marked D.)  
Full-Load Current Rating  
The full-load current rating is the amperage a  
machine draws at 100% of the rated output power.  
On machines with multiple motors, this is the  
amperage drawn by the largest motor or sum of all  
motors and electrical devices that might operate  
at one time during normal operations.  
For your own safety and protection of  
property, consult an electrician if you are  
unsure about wiring practices or electrical  
codes in your area.  
Full-Load Current Rating at 120V ..... 15 Amps  
The full-load current is not the maximum amount  
of amps that the machine will draw. If the machine  
is overloaded, it will draw additional amps beyond  
the full-load rating.  
Note: Circuit requirements in this manual apply to  
a dedicated circuit—where only one machine will  
be running on the circuit at a time. If machine will  
be connected to a shared circuit where multiple  
machines may be running at the same time, con-  
sult an electrician or qualified service personnel to  
ensure circuit is properly sized for safe operation.  
If the machine is overloaded for a sufficient length  
of time, damage, overheating, or fire may result—  
especially if connected to an undersized circuit.  
To reduce the risk of these hazards, avoid over-  
loading the machine during operation and make  
sure it is connected to a power supply circuit that  
meets the specified circuit requirements.  
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Improper connection of the equipment-grounding  
wire can result in a risk of electric shock. The  
wire with green insulation (with or without yellow  
stripes) is the equipment-grounding wire. If repair  
or replacement of the power cord or plug is nec-  
essary, do not connect the equipment-grounding  
wire to a live (current carrying) terminal.  
Grounding & Plug Requirements  
This machine MUST be grounded. In the event  
of certain malfunctions or breakdowns, grounding  
reduces the risk of electric shock by providing a  
path of least resistance for electric current.  
This machine is equipped with a power cord that  
has an equipment-grounding wire and a grounding  
plug. Only insert plug into a matching receptacle  
(outlet) that is properly installed and grounded in  
accordance with all local codes and ordinances.  
DO NOT modify the provided plug!  
Check with a qualified electrician or service per-  
sonnel if you do not understand these grounding  
requirements, or if you are in doubt about whether  
the tool is properly grounded. If you ever notice  
that a cord or plug is damaged or worn, discon-  
nect it from power, and immediately replace it with  
a new one.  
GROUNDED  
5-15 RECEPTACLE  
Extension Cords  
Grounding Prong  
We do not recommend using an extension cord  
with this machine. If you must use an extension  
cord, only use it if absolutely necessary and only  
on a temporary basis.  
5-15 PLUG  
Extension cords cause voltage drop, which can  
damage electrical components and shorten motor  
life. Voltage drop increases as the extension cord  
size gets longer and the gauge size gets smaller  
(higher gauge numbers indicate smaller sizes).  
Neutral Hot  
Figure 3. Typical 5-15 plug and receptacle.  
Any extension cord used with this machine must  
be in good condition and contain a ground wire  
and matching plug/receptacle. Additionally, it must  
meet the following size requirements:  
Minimum Gauge Size...........................12 AWG  
Maximum Length (Shorter is Better).......50 ft.  
SHOCK HAZARD!  
Two-prong outlets do not meet the grounding  
requirements for this machine. Do not modify  
or use an adapter on the plug provided—if  
it will not fit the outlet, have a qualified  
electrician install the proper outlet with a  
verified ground.  
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SECTION 3: SETUP  
Unpacking  
Inventory  
Your machine was carefully packaged for safe  
transportation. Remove the packaging materials  
from around your machine and inspect it. If you  
discover any damage, please call us immediately  
at (570) 546-9663 for advice.  
The following is a list of items shipped with your  
machine. Before beginning setup, lay these items  
out and inventory them.  
If any non-proprietary parts are missing (e.g. a  
nut or a washer), we will gladly replace them; or  
for the sake of expediency, replacements can be  
obtained at your local hardware store.  
Save the containers and all packing materials for  
possible inspection by the carrier or its agent.  
Otherwise, filing a freight claim can be difficult.  
When you are completely satisfied with the condi-  
tion of your shipment, inventory the contents.  
B
A
C
H
SUFFOCATION HAZARD!  
Keep children and pets away  
from plastic bags or packing  
materials shipped with this  
machine. Discard immediately.  
F
E
G
D
Figure 4. Model G0790 inventory.  
Needed for Setup  
Box 1 (Figure 4)  
Qty  
A. Cutterhead Elevation Crank ....................... 1  
B. Dust Bag..................................................... 1  
C. Dust Port 23⁄8" ............................................ 1  
D. Cord Wraps ................................................ 2  
E. Hex Wrench 4mm....................................... 1  
F. Cutterhead Elevation Crank Knob.............. 1  
G. Knife Changing Magnets............................ 2  
H. Dust Bag Clamp......................................... 1  
I. Hardware (not shown) ................................ 1  
—M4-.7 x 10 Phillips Head Screws............ 4  
—M5-.8 x 25 Button Head Cap Screw....... 1  
—Flat Washer 5mm ................................... 1  
The following are needed to complete the setup  
process, but are not included with your machine.  
Description  
Qty  
•
•
•
•
•
Safety Glasses ........................................... 1  
Cleaner/Degreaser ..................... As Needed  
Disposable Shop Rags............... As Needed  
Screwdriver Phillips #2............................... 1  
Dust Collection System.............................. 1  
NOTICE  
If you cannot find an item on this list, care-  
fully check around/inside the machine and  
packaging materials. Often, these items get  
lost in packaging materials while unpack-  
ing or they are pre-installed at the factory.  
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Cleanup  
Site Considerations  
The unpainted surfaces of your machine are  
coated with a heavy-duty rust preventative that  
prevents corrosion during shipment and storage.  
This rust preventative works extremely well, but it  
will take a little time to clean.  
Workbench Load  
Refer to the Machine Data Sheet for the weight  
and footprint specifications of your machine.  
Some workbenches may require additional rein-  
forcement to support the weight of the machine  
and workpiece materials.  
Be patient and do a thorough job cleaning your  
machine. The time you spend doing this now will  
give you a better appreciation for the proper care  
of your machine's unpainted surfaces.  
Placement Location  
Consider anticipated workpiece sizes and addi-  
tional space needed for auxiliary stands, work  
tables, or other machinery when establishing a  
location for this machine in the shop. Below is  
the minimum amount of space needed for the  
machine.  
There are many ways to remove this rust preven-  
tative, but the following steps work well in a wide  
variety of situations. Always follow the manufac-  
turer’s instructions with any cleaning product you  
use and make sure you work in a well-ventilated  
area to minimize exposure to toxic fumes.  
Before cleaning, gather the following:  
•
•
•
•
Disposable rags  
Cleaner/degreaser (WD•40 works well)  
Safety glasses & disposable gloves  
Plastic paint scraper (optional)  
17"  
Basic steps for removing rust preventative:  
1. Put on safety glasses.  
231/2  
"
2. Coat the rust preventative with a liberal  
amount of cleaner/degreaser, then let it soak  
for 5–10 minutes.  
Figure 5. Minimum working clearances.  
3. Wipe off the surfaces. If your cleaner/degreas-  
er is effective, the rust preventative will wipe  
off easily. If you have a plastic paint scraper,  
scrape off as much as you can first, then wipe  
off the rest with the rag.  
Children and visitors may be  
seriously injured if unsuper-  
vised around this machine.  
Lock entrances to the shop  
or disable start switch or  
power connection to prevent  
unsupervised use.  
4. Repeat Steps 2–3 as necessary until clean,  
then coat all unpainted surfaces with a quality  
metal protectant to prevent rust.  
NOTICE  
Avoid chlorine-based solvents, such as  
acetone or brake parts cleaner, that may  
damage painted surfaces.  
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Bench Mounting  
Assembly  
Number of Mounting Holes ............................ 4  
Dia. of Mounting Hardware Needed ..........5⁄16"  
The cutterhead elevation crank, cord wraps, and  
dust port must be installed in order to operate the  
planer.  
The base of this machine has mounting holes  
that allow it to be fastened to a workbench or  
other mounting surface to prevent it from moving  
during operation and causing accidental injury or  
damage.  
To assemble planer loose parts:  
1. Assemble cutterhead elevation crank by  
snapping knob onto crank handle.  
The strongest mounting option is a "Through  
Mount" (see example below) where holes are  
drilled all the way through the workbench—and  
hex bolts, washers, and hex nuts are used to  
secure the machine in place.  
2. Remove black plastic lid from crank handle.  
3. Align flat portion inside crank handle bore  
with flat portion on elevation shaft, then place  
crank assembly on elevation shaft.  
4. Thread M5-.8 x 25 button head cap screw  
and 5mm flat washer through crank (see  
Figure 8) and into shaft. Tighten with 4mm  
hex wrench. Do not over-tighten.  
Hex  
Bolt  
Flat Washer  
Machine Base  
Workbench  
Flat Washer  
Lock Washer  
Hex Nut  
Figure 6. Typical "Through Mount" setup.  
Cutterhead  
Elevation Crank  
Another option is a "Direct Mount" (see example  
below) where the machine is secured directly to  
the workbench with lag screws and washers.  
Figure 8. Installing cutterhead elevation crank.  
5. Re-install black plastic lid.  
Lag Screw  
Flat Washer  
Machine Base  
Workbench  
Figure 7. Typical "Direct Mount" setup.  
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6. Position (2) cord wraps over pre-drilled holes  
in planer cabinet (see Figure 9), and secure  
with (4) M4-.7 x 10 Phillips head screws.  
Dust Collection  
This machine creates substantial amounts  
of dust during operation. Breathing air-  
borne dust on a regular basis can result in  
permanent respiratory illness. Reduce your  
risk by wearing a respirator and capturing  
the dust with a dust collection system.  
x 4  
Recommended CFM at Dust Port: 250 CFM  
Do not confuse this CFM recommendation with  
the rating of the dust collector. To determine the  
CFM at the dust port, you must consider these  
variables: (1) CFM rating of the dust collector,  
(2) hose type and length between the dust col-  
lector and the machine, (3) number of branches  
or wyes, and (4) amount of other open lines  
throughout the system. Explaining how to cal-  
culate these variables is beyond the scope of  
this manual. Consult an expert or purchase a  
good dust collection "how-to" book.  
Figure 9. Cord wraps installed with #2 Phillips  
head screwdriver.  
7. Slide dust port onto fan housing (see Figure  
10) and tighten pre-installed button head cap  
screw with 4mm hex wrench.  
Dust Port  
To connect a dust collection hose:  
1. If installed, remove dust bag and clamp from  
dust port (see Figure 11).  
Fan  
Housing  
2. Fit 21⁄2" dust hose over dust port and secure  
with hose clamp.  
Figure 10. Dust port installed on fan housing.  
3. Tug hose to make sure it does not come  
off. Note: A tight fit is necessary for proper  
performance.  
8. Slide dust hose clamp over dust bag, insert  
bag and clamp over dust port (see Figure  
11), and secure with handle.  
Dust Port  
Dust Bag  
Clamp  
Figure 11. Dust bag installed on port and  
secured by clamp.  
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To test run machine:  
Test Run  
1. Make sure you have read safety instructions  
at beginning of manual and that machine is  
set up properly.  
Once assembly is complete, test run the machine  
to ensure it is properly connected to power and  
safety components are functioning properly.  
2. Make sure all tools and objects used during  
setup are cleared away from machine.  
If you find an unusual problem during the test run,  
immediately stop the machine, disconnect it from  
power, and fix the problem BEFORE operating the  
machine again. The Troubleshooting table in the  
SERVICE section of this manual can help.  
3. Connect machine to power source.  
4. Turn machine ON, verify motor operation,  
then turn machine OFF. Motor should run  
smoothly and without unusual problems or  
noises.  
The test run consists of verifying the following:  
1) The motor powers up and runs correctly, and  
2) the safety disabling mechanism on the switch  
works correctly.  
5. Remove switch disabling key, as shown in  
Figure 12.  
Serious injury or death can result from  
using this machine BEFORE understanding  
its controls and related safety information.  
DO NOT operate, or allow others to operate,  
machine until the information is understood.  
DO NOT start machine until all preceding  
setup instructions have been performed.  
Operating an improperly set up machine  
may result in malfunction or unexpect-  
ed results that can lead to serious injury,  
death, or machine/property damage.  
Figure 12. Removing key from paddle switch to  
disable switch and prevent unauthorized use.  
6. Try to start machine with paddle switch.  
— If machine does not start, switch disabling  
feature is working as designed.  
— If machine starts, immediately stop  
machine. The switch disabling feature is  
not working correctly. This safety feature  
must work properly before proceeding with  
regular operations. Call Tech Support for  
help.  
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SECTION 4: OPERATIONS  
To complete a typical operation, the operator  
does the following:  
Operation Overview  
1. Examines workpiece to make sure it is suit-  
The purpose of this overview is to provide the nov-  
ice machine operator with a basic understanding  
of how the machine is used during operation, so  
the machine controls/components discussed later  
in this manual are easier to understand.  
able for planing.  
2. Puts on safety glasses or face shield, a respi-  
rator, and ear protection.  
3. If workpiece is bowed, operator surface  
planes workpiece on a jointer until one side  
is flat. Doing so ensures that it sits solidly on  
planer table during operation.  
Due to the generic nature of this overview, it is  
not intended to be an instructional guide. To learn  
more about specific operations, read this entire  
manual and seek additional training from expe-  
rienced machine operators, and do additional  
research outside of this manual by reading "how-  
to" books, trade magazines, or websites.  
4. Places workpiece on table with flat side  
down. Positions front edge of workpiece far  
enough under cutterhead assembly to set  
depth of cut using cutterhead elevation scale  
(see Depth of Cut on Page 20).  
5. Correctly adjusts cutterhead height to  
To reduce your risk of  
serious injury, read this  
entire manual BEFORE  
using machine.  
workpiece thickness.  
6. When all safety precautions have been taken,  
turns planer ON.  
7. Stands to one side of planer path to reduce  
risk of kickback injuries, then, with flat surface  
of workpiece facing down, feeds workpiece  
into planer until infeed roller grabs it.  
Eye injuries, respiratory problems, or hear-  
ing loss can occur while operating this  
tool. Wear personal protective equipment to  
reduce your risk from these hazards.  
8. Once workpiece is clear of outfeed roller,  
operator measures workpiece thickness. If  
further planing is required, operator adjusts  
cutterhead height, then feed workpiece into  
front of planer again.  
9. Operator continues process until desired  
thickness is achieved, then turns machine  
OFF.  
If you are not experienced with this type  
of machine, WE STRONGLY RECOMMEND  
that you seek additional training outside of  
this manual. Read books/magazines or get  
formal training before beginning any proj-  
ects. Regardless of the content in this sec-  
tion, Grizzly Industrial will not be held liable  
for accidents caused by lack of training.  
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Workpiece  
Inspection  
Wood Types  
The species of wood, as well as its condition,  
greatly affects the depth of cut the planer can  
effectively take with each pass.  
Some workpieces are not safe to use or may  
require modification before they are. Before cut-  
ting, inspect all workpieces for the following:  
The chart in the figure below shows the Janka  
Hardness Rating for a number of commonly  
used species. The larger the number, the harder  
the workpiece, and the less material should be  
removed in any one pass for good results.  
•
Material Type: This machine is only intend-  
ed for workpieces of natural wood fiber  
Attempting to use workpieces of any other  
material that may break apart during opera-  
tion could lead to serious personal injury and  
property damage.  
Note: The Janka Hardness Rating is expressed in  
pounds of force required to embed a 0.444" steel  
ball into the surface of the wood to a depth equal  
to half the ball's diameter.  
•
Foreign Objects: Inspect lumber for defects  
and foreign objects (nails, staples, imbedded  
gravel, etc,). If you have any question about  
the quality of your lumber, DO NOT use it.  
Remember, wood stacked on a concrete floor  
can have small pieces of stone or concrete  
pressed into the surface.  
Janka  
Species  
Hardness  
3220  
2697  
1780  
1630  
1450  
1360  
1320  
1300  
1290  
1010  
1000  
950  
Ebony  
Red Mahogany  
Rosewood  
Red Pine  
•
•
Large/Loose Knots: Loose knots can  
become dislodged during operation. Large  
knots can cause kickback and machine dam-  
age. Always use workpieces that do not have  
large/loose knots.  
Sugar Maple  
White Oak  
White Ash  
American Beech  
Red Oak  
Wet or "Green" Stock: Avoid using wood  
with a high water content. Wood with more  
than 20% moisture content or wood exposed  
to excessive moisture (such as rain or snow),  
will cut poorly and cause excessive wear to  
the machine. Excess moisture can also has-  
ten rust and corrosion of the machine and/or  
individual components.  
Black Walnut  
Teak  
Black Cherry  
Cedar  
900  
Sycamore  
Douglas Fir  
Chestnut  
770  
660  
•
•
Excessive Warping: Workpieces with exces-  
sive cupping, bowing, or twisting are danger-  
ous to cut because they are unstable and  
often unpredictable when being cut. DO NOT  
use workpieces with these characteristics!  
540  
Hemlock  
500  
White Pin  
Basswood  
Eastern White Pine  
Balsa  
420  
410  
Minor Cupping: Workpieces with slight cup-  
ping can be safely supported if the cupped  
side is facing the table. On the contrary,  
a workpiece supported on the bowed side  
will rock during operation and could cause  
severe injury from kickback.  
380  
100  
Figure 13. Janka Hardness Rating for some  
common wood species.  
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Planing Tips  
Cutting Problems  
•
Inspect your lumber for twisting or cupping,  
and surface one face on a jointer if necessary  
before planing workpiece.  
Below is a list of wood characteristics you may  
encounter when planing. The following descrip-  
tions of defects will give you some possible  
answers to problems you may encounter while  
planing different materials. Possible solutions fol-  
low the descriptions.  
•
•
•
Scrape off all glue when planing glued-up  
panels. Dried glue can quickly dull knives.  
DO NOT plane more than one piece at a  
time.  
Chipped Grain  
Problem: Usually a result of cutting against the  
grain, planing lumber with knots or excessive  
amount of cross grain, or using dull knives.  
Never remove more than the recommended  
amount of material on each pass. Only  
remove a small amount of material on each  
pass when planing wide or dense stock.  
Solution: Decrease the depth of cut. Inspect  
your lumber and determine if its grain pattern is  
causing the problem. If the lumber does not show  
substantial crossgrain, inspect your knives.  
•
Support the workpiece on both ends. Get  
assistance from another person if you are  
planing long lumber, or use roller stands to  
support the workpiece.  
Fuzzy Grain  
Problem: Usually caused by surfacing lumber  
with too high of a moisture content. Sometimes  
fuzzy grain is an unavoidable characteristic of  
some woods, such as basswood. Fuzzy grain can  
also be caused by dull knives.  
•
Measure the workpiece thickness with cali-  
pers to get exact results.  
•
Carefully inspect all stock to make sure it is  
free of large knots or foreign objects that may  
damage your knives, cause kickback, or be  
ejected from the planer.  
Solution: Check the lumber with a moisture  
meter. If moisture is greater than 20%, sticker the  
lumber and allow it to dry. Otherwise, inspect the  
knife condition.  
•
•
When possible, plane equal amounts on  
each side of the board to reduce the chance  
of twisting or cupping.  
Snipe  
Use the entire width of the planer to wear  
knives evenly. With narrow workpieces, alter-  
nate between far left, far right, and the middle  
of the table. Your knives will remain sharp  
much longer.  
Problem: Occurs when board ends have more  
material removed than the rest of the board.  
Usually caused when the workpiece is not prop-  
erly supported as it goes through the machine. In  
many cases, however, a small amount of snipe is  
inevitable.  
•
•
To avoid "chip marks," always plane WITH  
the grain direction of the wood. Never plain  
cross-grain or end-grain.  
Solution: The best way to deal with snipe is by  
planing lumber longer than your intended work  
length and then cutting off the excess after plan-  
ing is completed.  
Plane ONLY natural wood fiber. Do not  
plane wood composites or other materials  
that could break up in the planer and cause  
operator injury or damage to planer.  
•
Always true cupped or warped stock on a  
jointer before planing.  
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Pitch & Glue Build-up  
Depth of Cut  
Problem: Glue and resin buildup on the rollers  
and cutterhead will cause overheating by decreas-  
ing cutting sharpness while increasing drag in the  
feed mechanism. The result can include scorched  
lumber as well as uneven knife marks and chatter.  
The planing depth on the Model G0790 is con-  
trolled by the cutterhead elevation crank on top of  
the planer. Turning the crank clockwise raises the  
cutterhead; turning it counterclockwise lowers the  
cutterhead.  
Solution: Clean the rollers and cutterhead.  
Chip Marks or Indentations  
Elevation Crank  
Problem: Chip indentation or chip bruising is the  
result of wood chips not being thrown away from  
the cutterhead and out of the machine. Instead  
they are carried around the cutterhead, deposited  
on the planed surface and crushed by the outfeed  
roller. Chip indentations can be caused by a num-  
ber of reasons, some of which are:  
The elevation crank provides a simple and accu-  
rate method for producing cuts of consistent  
depth on multiple passes.  
The pitch of the elevation leadscrew is 16 TPI  
(threads per inch), meaning that every turn of the  
crank will move the cutterhead 1⁄16". Using this as  
a base, you can make passes with a depth of cut  
1
1
3
1
1
•
•
The type of lumber being planed. Certain  
species have a tendency to chip bruise.  
of ⁄64", ⁄32", ⁄64" and ⁄16" by turning the crank ⁄4  
turn, 1⁄2 turn, 3⁄4 turn, and one full turn, respectively  
(see Figure 14).  
A high moisture content (over 20%) or sur-  
face moisture. Typically found in air-dried  
stock where the surface is dry but the inside  
needs a longer time to season.  
1⁄2 Turn  
=1⁄32"  
•
•
Dull knives.  
Up  
Down  
Too much material being removed in one  
pass.  
3⁄4 Turn  
=3⁄64"  
1⁄4 Turn  
=1⁄64"  
Solution:  
•
Lumber must be completely dry, preferably  
1 Turn  
kiln-dried (KD). Air-dried (AD) lumber must  
be seasoned properly and have no surface  
moisture. DO NOT surface partially-air-dried  
(PAD) lumber.  
=1⁄16"  
Figure 14. Crank elevation increments.  
Note: Any time you switch directions with the  
cutterhead elevation crank, there will be a small  
amount of backlash—so the first turn of the crank  
after switching directions will be slightly less than  
1⁄16". However, as long as you move the crank in  
the same direction during the operation, backlash  
will not be a factor.  
•
•
Make sure planer knives are sharp.  
Reduce depth of cut.  
Although the correct depth of cut varies according  
to wood hardness and workpiece width, we rec-  
ommend a maximum depth of cut no more than  
1⁄32". A series of light cuts will give better results  
and put less stress on the planer than trying to  
take off too much material in a single pass.  
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Elevation Scale  
Feeding Workpiece  
The depth of cut is read directly from the elevation  
scale (see Figure 15) on the righthand column at  
the front of the machine. The measurement indi-  
cated by the red arrow is the effective thickness  
of the board after planing.  
The feed rate on this planer is automatically set  
at 26 FPM. Infeed and outfeed rollers move the  
workpiece through the planer while keeping it flat  
and providing a consistent rate of movement.  
To feed workpiece into planer:  
Column  
1. Place workpiece on table so it is perpendicu-  
lar to cutterhead, with side to be planed fac-  
ing up toward cutterhead.  
Scale  
Note: Boards more than 24" long should be  
supported on both sides of planer.  
Red Arrow  
2. Lower cutterhead until depth bar (see Figure  
16) just touches workpiece.  
Figure 15. Positioning elevation scale.  
Outfeed  
Example: If you need to plane a board down to  
1", simply make multiple passes (no greater than  
the maximum depth of cut) until the cutterhead  
elevation scale reads 1". A final pass at this set-  
ting will create a 1" thick workpiece.  
Depth  
Bar  
Note: The cutterhead elevation scale does not  
provide a precise measurement and should only  
be used for approximate measurements. If pre-  
cise workpiece thicknesses are needed, use  
calipers to ensure your workpieces meet your  
standards.  
Infeed  
Figure 16. Basic planing operation setup.  
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Note: Any time you switch directions with  
cutterhead elevation handle, there will be  
a small amount of backlash—so first crank  
of handle after switching directions will be  
6. Once workpiece is clear of outfeed roller,  
measure workpiece thickness. If further plan-  
ing is needed, lower cutterhead by turning  
elevation crank handle ½ turn (1⁄32"), return  
the workpiece to the infeed table, then con-  
tinue.  
1
slightly less than ⁄16". However, as long as  
you move handle in same direction during  
operation, backlash will not be a factor.  
7. Continue this process until desired thick-  
ness is reached. Depth of cut indicator scale  
shows approximate thickness of workpiece  
after it has been cut. Use this indicator to  
judge when thickness is approximately cor-  
rect. For more precise applications, use a  
caliper to measure workpiece thickness.  
3. Turn cutterhead elevation crank ¼ turn clock-  
1
wise to raise cutterhead approximately ⁄64".  
1
This will set depth of cut to ⁄32". Remove  
workpiece from planer.  
4. Turn planer ON.  
5. With flat side of board facing down on table,  
feed workpiece into front of planer, making  
sure not to stand directly in front or behind  
workpiece to reduce the risk of a kickback  
injury.  
— If cut is too deep and bogs down planer,  
turn planer OFF immediately, allow it to  
come to a complete stop, raise cutterhead,  
remove workpiece, reduce depth of cut,  
then repeat Step 5.  
Note: Infeed and outfeed rollers will control  
feed rate of workpiece as it passes through  
planer. Do not push or pull on workpiece.  
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SECTION 5: ACCESSORIES  
H4978—Deluxe Earmuffs - 27dB  
H4979—Twin Cup Hearing Protector - 29dB  
T20446— Classic Earplugs, 200 pair - 31dB  
Protect yourself comfortably with a pair of cush-  
ioned earmuffs. Especially important if you or  
employees operate for hours at a time.  
Installing unapproved accessories may  
cause machine to malfunction, resulting in  
serious personal injury or machine damage.  
To reduce this risk, only install accessories  
recommended for this machine by Grizzly.  
H4978  
NOTICE  
T20446  
Refer to our website or latest catalog for  
additional recommended accessories.  
H4979  
Basic Eye Protection  
T20501—Face Shield Crown Protector 4"  
T20502—Face Shield Crown Protector 7"  
T20503—Face Shield Window  
T20451—“Kirova” Clear Safety Glasses  
T20452—“Kirova” Anti-Reflective S. Glasses  
H7194—Bifocal Safety Glasses 1.5  
H7195—Bifocal Safety Glasses 2.0  
H7196—Bifocal Safety Glasses 2.5  
Figure 18. Our most popular earmuffs.  
H2499—Small Half-Mask Respirator  
H3631—Medium Half-Mask Respirator  
H3632—Large Half-Mask Respirator  
T20502  
H3635—Cartridge Filter Pair P100  
Wood dust has been linked to nasal cancer and  
severe respiratory illnesses. If you work around-  
dust everyday, a half-mask respirator can be a  
lifesaver. Also compatible with safety glasses!  
T20452  
T20503  
T20451  
H7194  
Figure 17. Assortment of basic eye protection.  
Figure 19. Half-mask respirator with disposable  
cartridge filters.  
order online at www.grizzly.com or call 1-800-523-4777  
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T26979—3-in-1 Workpiece Support Stand  
This 3-in-1 Workpiece Support Stand features a  
rotating head with steel roller topped with 8 roll-  
ing balls. The heavy-duty steel frame has four  
outrigger legs for stability and an adjustable foot  
for uneven floors. Height adjusts from 271⁄2" to  
43" and supports up to 250 lb. It even folds up for  
easy storage!  
Basic Lubricants  
These lubricants reduce sliding friction and hang-  
ups, repel moisture and dirt, and inhibits rust while  
preventing resin build-up. They out-performspaste  
wax and contain no silicone or CFC's.  
Figure 22. Model G5563 Slip-It Tool Lube &  
G4682 Dry Coating Lube.  
G0725—6" x 28" Benchtop Jointer  
Don’t let the size of this benchtop jointer fool you!  
With its cast iron tables and center-mounted cast  
iron fence, this 6" Jointer is tough enough to han-  
dle big jobs. It also features a 11⁄2 HP motor, 21⁄2  
"
dust port, built-in dust collection system, 45° bevel  
adjustment, and easy-to-adjust knives. Great for  
job sites or shops with limited space!  
Figure 20. Model T26979 3-in-1 Workpiece  
Support Stand.  
G2857—Thickness Guage  
Measure thicknesses and diameters quickly with  
this handy gauge. Wonderful for thickness plan-  
ers, wood lathes, and other shop measurements.  
Measures from 1⁄16" to 2" in 1⁄32" increments. Made  
in the U.S.A.  
Figure 23. Model G0725 Benchtop Jointer.  
Figure 21. Model G2857 Thickness Gauge.  
order online at www.grizzly.com or call 1-800-523-4777  
-24-  
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SECTION 6: MAINTENANCE  
Lubrication  
To reduce risk of shock or  
accidental startup, always  
disconnect machine from  
power before adjustments,  
maintenance, or service.  
There are three primary systems that require  
periodic lubrication: the cutterhead elevation lead-  
screws, the feed roller chain drive, and the table  
height chain. Clean the components in the section  
with an oil/grease solvent cleaner or mineral spir-  
its before applying lubrication.  
Schedule  
Elevation Leadscrews  
Items Needed  
Type .............................G4682 Dry Coating Lube  
Lubrication Frequency.............................Monthly  
Qty  
For optimum performance from your machine,  
follow this maintenance schedule and refer to any  
specific instructions given in this section.  
To lubricate elevation leadscrews:  
Daily Check  
•
•
•
•
Loose mounting bolts.  
Damaged knives.  
Worn or damaged wires.  
Any other unsafe condition.  
1. DISCONNECT MACHINE FROM POWER!  
2. Vacuum chips and dust from leadscrews  
through open face of all four columns (see  
Figure 24).  
Monthly Check  
•
•
•
•
•
Clean chains and sprockets of dust, wood  
chips, and old grease.  
Lightly coat chains and sprockets with auto-  
motive bearing grease (see Page 25).  
Lubricate column leadscrews with spray lubri-  
cant (see Page 24).  
Check V-belt for tension, damage, or wear  
(see Page 29).  
Remove cutterhead guard and fan cover (see  
Page 27), and thoroughly clean built-up saw-  
dust and chips.  
Column  
Leadscrew  
Figure 24. Location of cutterhead elevation  
leadscrews.  
Cleaning &  
Protecting  
3. Use mineral spirits, stiff brush, and shop rags  
to remove old lubricant.  
4. Spray lubricant onto each leadscrew. Move  
Cleaning the Model G0790 is relatively easy.  
Vacuum excess wood chips and sawdust, and  
wipe off the remaining dust with a dry cloth. If any  
resin has built up, use a resin dissolving cleaner  
to remove it.  
cutterhead up and down to evenly distribute.  
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Feed Roller Chain Drive  
Items Needed  
Table Height Chain  
Items Needed  
Qty  
Qty  
Grease.....T23964 NLGI#2 or Equivalent Grease  
Grease.....T23964 NLGI#2 or Equivalent Grease  
Lubrication Frequency.............................Monthly  
Lubrication Frequency.............................Monthly  
To lubricate feed roller chain drive:  
To lubricate table height chain:  
1. DISCONNECT MACHINE FROM POWER!  
1. DISCONNECT MACHINE FROM POWER!  
2. Remove (4) M6-1 x 12 button head cap  
2. Gently tilt machine onto its side (see Figure  
26) to expose chain.  
screws.  
3. Remove side cover to expose chain (see  
Figure 25).  
Table Height Chain  
Feed Roller Chain  
Sprockets  
Figure 26. Table height chain and sprockets  
Sprockets  
exposed for lubricating.  
3. Use mineral spirits, stiff brush, and shop rags  
Figure 25. Cutterhead elevation leadscrews and  
feed roller drive chain exposed for lubricating.  
to clean old grease from chain.  
4. Apply light coating of grease to chain linkage  
4. Use mineral spirits, stiff brush, and shop rags  
and sprockets.  
to clean old grease from chain.  
5. Tilt machine back onto its base.  
5. Apply light coating of grease to chain linkage  
and sprockets.  
6. Re-install side cover.  
-26-  
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SECTION 7: SERVICE  
Review the troubleshooting and procedures in this section if a problem develops with your machine. If you  
need replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather  
the serial number and manufacture date of your machine before calling.  
Troubleshooting  
Symptom  
Possible Cause  
Possible Solution  
1. Switch disabling key removed.  
2. No power to planer.  
1. Install disabling key.  
Motor will not run.  
2. Check power supply.  
3. Machine circuit tripped.  
3. Turn planer OFF. Reset machine circuit  
breaker (Page 4).  
4. Defective switch or loose wiring.  
5. Carbon brushes are at fault.  
4. Verify all wire connections on switch/motor  
are connected and tight.  
5. Replace carbon brushes.  
Motor overheats or operates at  
limited RPM.  
1. Motor overloaded during operation.  
2. Carbon brushes worn or at fault.  
1. Reduce cutting load; take lighter cuts.  
2. Replace carbon brushes.  
Motor stalls or shuts off during a cut. 1. Cut is too deep.  
2. Machine circuit breaker tripped.  
1. Reduce depth-of-cut.  
2. Turn planer OFF. Reset machine circuit  
breaker (Page 4).  
3. Short circuit in motor or loose  
connections.  
3. Repair or replace connections on motor  
for loose or shorted terminals or worn  
insulation.  
4. Power supply circuit breaker tripped  
or fuse blown.  
4. Reset or replace fuse.  
5. Carbon brushes worn or at fault.  
5. Replace carbon brushes.  
Cutterhead slows or squeals when  
cutting, especially on start-up.  
1. Belt worn out.  
1. Replace belt (Page 29).  
2. Carbon brushes worn or at fault.  
2. Replace carbon brushes.  
Infeed/outfeed rollers not rotating.  
1. Chain and sprockets are worn,  
misadjusted, disconnected, or  
broken.  
1. Adjust chain and sprockets; replace if  
necessary.  
Vibration when running or cutting.  
1. Knives are dull.  
1. Replace knives.  
2. Damaged belt.  
2. Replace belt (Page 29).  
3. Tighten or replace cutterhead.  
4. Check/replace cutterhead bearings.  
3. Loose or damaged cutterhead.  
4. Worn cutterhead bearings.  
Boards don't feed properly into  
machine.  
1. Knives are dull.  
1. Replace knives (Page 27).  
2. Feed rollers are dirty, worn, loose, or 2. Clean feed rollers (Page 31). Examine  
misadjusted.  
for wear, and ensure they are installed  
securely and properly adjusted.  
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Machine Operation  
Symptom  
Possible Cause  
Possible Solution  
Excessive snipe  
(gouge at the end of  
the workpiece that is  
uneven with the rest  
of the cut).  
1. Aftermarket outfeed support table/rollers  
slopes down or is not level with main table.  
2. Workpiece not properly supported as it  
leaves planer.  
1. Adjust rear extension wing set screws to make  
extension level with main table.  
2. Use an assistant or roller beds/stands to properly  
support the workpiece as it leaves the planer.  
Note: A small  
amount of snipe is  
inevitable with all  
types of planers—  
the key is to  
minimize it.  
Consistent chipping 1. Knots or conflicting grain direction in  
1. Inspect workpiece for knots and grain direction; use  
only clean stock (Page 24).  
pattern.  
workpiece.  
2. Nicked or chipped knife.  
3. Feed rate too fast.  
4. Depth of cut too deep.  
2. Sharpen/replace knife (Page 36).  
3. Reduce feed rate (Page 25).  
4. Reduce the depth of cut (Page 26).  
-28-  
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Knife Replacement  
To reduce risk of shock or  
accidental startup, always  
disconnect machine from  
power before adjustments,  
maintenance, or service.  
The cutterhead knives on Model G0790 are  
extremely sharp. Accidental contact with  
knives can result in severe cuts. Take great  
caution whenever working with or around  
cutterhead knives. Wear heavy leather  
gloves to reduce risk of severe cuts.  
Tools Needed  
Qty  
Hex Wrench 4mm.............................................. 1  
Removing Knives  
1. DISCONNECT MACHINE FROM POWER!  
2. Remove (2) M5-.8 x 10 cap screws from  
cutterhead guard, then remove guard (see  
Figure 27).  
To maintain accurate and consistent plan-  
ing results, we do not recommend sharpen-  
ing knives yourself. Instead, just replace  
dull knives or have them professionally  
sharpened.  
Note: Cutterhead guard locks in place.  
After removing cap screws, slide guard right  
approximately 1⁄8" to release.  
The knives on the Model G0790 Planer are  
reversible and should always be reversed or  
replaced as a matched set. To avoid downtime,  
we recommend having an extra set of knives for  
your planer. Once the cutterhead, gib, and knives  
have been inspected and prepared, install the  
knives.  
Cutterhead  
Guard  
Before re-installing the knives, the cutterhead,  
gib and knife must be inspected. Neglecting to  
inspect these components may result in damage  
to the planer.  
Cap Screws  
The condition of the knives on the Model G0790  
will affect the precision of the cut. During opera-  
tion, watch for the following signs of dulled knives.  
Figure 27. Position of cutterhead guard prior to  
disassembly.  
•
Raised grain occurs as a result of dull knives  
hammering at the surface of the wood.  
•
A "fuzzy" appearance on the surface of the  
wood occurs as a result of dull knives tearing,  
rather than cutting the wood fibers.  
•
•
Ridges occur as a result of nicks along the  
knife edge.  
Difficulty feeding the workpiece into the  
planer.  
If any of these signs become apparent during use,  
the knives should be reversed or replaced.  
-29-  
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3. Wearing heavy leather gloves, carefully turn  
cutterhead until knives are visible (see Figure  
28).  
Installing Knives  
1. DISCONNECT MACHINE FROM POWER!  
2. Using magnets, position knife over two pins  
on cutterhead (see Figure 29). Be sure knife  
is oriented with beveled edge up.  
Beveled Edge Up  
Cutterhead  
Knife  
Pins  
Figure 28. Location of cutterhead knives and  
cap screws.  
Figure 29. Example of knife installation.  
4. Remove (6) M6-1 x 16 cap screws from gib  
3. Using magnets, place gib over knife. Secure  
gib with (6) M6-1 x 16 cap screws (see  
Figure 30) removed earlier.  
using 4mm hex wrench.  
5. Use included magnets to remove gib, then  
knife.  
Inspecting Cutterhead, Gib, and Knives  
1. DISCONNECT PLANER FROM POWER!  
2. Carefully clean the cutterhead with a rag and  
with a flashlight, inspect the following:  
•
•
Make sure the threaded screw holes do  
not contain wood material or sawdust.  
Make sure that the hex socket and the  
threads of all cap screws are in good con-  
dition. Replace if questionable.  
Figure 30. Gib installation.  
4. Carefully rotate cutterhead until second knife  
slot is exposed.  
•
•
Make sure any resin or glue buildup  
on the cutterhead, gib, and knives is  
removed so the knife and gib will sit flat  
on the cutterhead.  
5. Repeat Steps 2–3 for second knife, then  
replace knife guard.  
Make sure the knives are free of cracks.  
If any cracks exist, replace both knives.  
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Replacing Motor  
Brushes  
Replacing &  
Tensioning V-Belt  
This motor is equipped with two long-life carbon  
brushes. However, brush life expectancy is affect-  
ed by motor loading. Regularly planing very wide,  
dense boards or cutting too deeply will reduce  
brush life.  
The cutterhead is driven by a belt that is located  
on the right-hand side of the motor and cutterhead  
assembly (when facing the front of the machine).  
The belt is very durable, but with extended use it  
may begin to stretch and slip, indicating the need  
for tightening or replacement.  
Check brushes if motor loses power or becomes  
noisy. Replace the carbon brushes when the motor  
no longer reaches full power or if brushes mea-  
sure less than 1⁄4" long (new brushes are 5⁄8" long).  
Tools Needed  
Qty  
Hex Wrench 4mm.............................................. 1  
Hex Wrench 5mm.............................................. 1  
Phillips Head Screwdriver #2 ............................ 1  
Tools Needed  
Flat Head Screwdriver #2.................................. 1  
Qty  
To replace belt:  
1. DISCONNECT MACHINE FROM POWER!  
2. Slide dust port off fan housing.  
To replace motor brushes:  
1. DISCONNECT MACHINE FROM POWER!  
3. Remove (5) M5-.8 x 15 tap screws that  
secure fan housing cover (see Figure 32).  
2. Unscrew brush cap and carefully remove  
brush from motor (see Figure 31).  
Fan  
Housing  
Fan  
Cover  
Dust Port  
Figure 32. Hardware attaching fan housing.  
Figure 31. Brush holder location. A second  
brush is located on other side of motor.  
4. Remove M6-1 x 12 button head cap screw  
that attaches fan to shaft. This screw has left-  
hand threads; rotate right to loosen or left to  
tighten. Slide fan off shaft.  
3. Install new brush and re-install brush cap.  
4. Repeat Steps 2–3 to replace motor brush on  
opposite side of motor housing.  
5. Remove (5) M6-1 x 12 Phillips head screws  
(see Figure 32) to remove fan housing and  
expose V-belt.  
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6. Remove (2) M5-.8 x 10 cap screws that  
secure belt guard (see Figure 33).  
Note: V-belt is correctly tensioned when there  
is approximately ⁄8" deflection when moder-  
3
ate pressure is applied midway between pul-  
leys, as illustrated in Figure 34.  
Belt Guard  
Cutterhead  
Pulley  
Approximately  
3
⁄8" Deflection  
Motor  
Pulley  
Motor Tensioner Bolt  
Figure 33. Fan housing removed and V-belt  
exposed.  
Figure 34. Correct amount of belt deflection.  
7. Loosen motor tensioner bolt (see Figure 35)  
to release tension on V-belt.  
10. Re-install belt guard, fan housing, fan, and  
fan cover in reverse order that they were  
removed.  
8. Remove V-belt by rolling it off motor pulley.  
9. Place new V-belt over both pulleys. To  
tension belt, rotate motor toward front of  
machine using moderate force. Hold in place  
and tighten motor tensioner bolt.  
-32-  
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Scale Calibration  
Feed Rollers  
Although correctly set at the factory, the scale can  
be adjusted for accuracy if it becomes necessary.  
The feed rollers rotate in bushing blocks that are  
spring loaded. The feed rollers ride up on the  
board so that the roller pressure is maintained.  
If chips or sawdust build up between the bracket  
and bushing block (see Figure 36), the amount  
of roller vertical travel will be reduced, potentially  
causing improper feeding of workpiece through  
the machine.  
Tools Needed  
Qty  
Phillips Screwdriver #2 ...................................... 1  
Scrap Piece of Stock......................................... 1  
Calipers ............................................................. 1  
To reposition scale:  
1. Plane scrap piece of stock until it is flat on  
both sides and has even thickness along its  
length.  
Note: Turn scrap board over between each  
pass to make surfaces parallel.  
Bracket  
Bushing  
2. Use calipers to measure board thickness.  
Block  
3. If there is a discrepancy between board thick-  
ness and reading on elevation scale, loosen  
the M6-1 x 12 Phillips head screw shown in  
Figure 35, adjust position of red pointer to  
indicate correct thickness, then re-tighten  
screw.  
Sawdust can get trapped between the  
bushing block and the bracket.  
Figure 36.  
Periodically check and clean chips and sawdust  
from between the bushing blocks and brackets.  
Items Needed  
4'' Tall Block of Wood........................................ 1  
Qty  
Scale Indicator  
Arrow  
To clean feed rollers:  
1. DISCONNECT MACHINE FROM POWER!  
2. Place a 4'' tall block of wood between one  
feed roller and planer table. Ensure block of  
wood is not under cutterhead.  
Phillips Head  
Screw  
3. Lower cutterhead assembly just enough so  
roller is pushed up against spring and pres-  
sure is off of two brackets.  
Figure 35. Elevation scale components used to  
calibrate thickness reading.  
4. Remove any trapped material from between  
roller assembly and bracket.  
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Table Height  
Adjustment  
NOTICE  
During next step, DO NOT let chain fall off  
sprockets. It can be very difficult to return  
chain to proper location on sprockets with-  
out changing table adjustments.  
The table and cutterhead are checked for paral-  
lelism at the factory. However, over long periods  
of use, parallelism may be affected. To restore  
parallelism between the table and the cutterhead,  
perform the following steps.  
4. Loosen (2) M5-.8 x 10 cap screws on idler  
bracket to loosen chain. Do not remove  
chain.  
Tools Needed  
Hex Wrench 4mm.............................................. 1  
Qty  
Note: The goal in the next step is to adjust the  
height of the table by rotating the leadscrew  
sprockets at the corners of the base (see  
Figure 38).  
To adjust table height:  
1. Plane a test piece of wood. Measure amount  
of taper from front to back and side to side.  
Determine which corner(s) of table need to  
be adjusted.  
Base  
2. DISCONNECT MACHINE FROM POWER!  
Leadscrew  
Sprockets  
3. Gently tilt machine onto its side (see Figure  
37) to expose table height chain and sprock-  
ets.  
Table Height Chain  
Figure 38. Location of leadscrew sprockets  
(viewed from underneath planer).  
5. Gently lift chain clear of one leadscrew  
sprocket at a time. Rotating sprocket by  
one tooth will move that corner of table by  
approximately 0.006".  
Idler Bracket  
& Sprocket  
6. When satisfied with adjustments, re-tighten  
idler bracket with cap screws. Set machine  
back on its base.  
Figure 37. Idler bracket, sprocket, and chain  
(viewed from underneath planer).  
7. Perform a test cut to verify parallelism. If  
cutterhead and table are not parallel, perform  
Steps 3–6 again.  
-34-  
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machine  
SECTION 8: WIRING  
These pages are current at the time of printing. However, in the spirit of improvement, we may make chang-  
es to the electrical systems of future machines. Compare the manufacture date of your machine to the one  
stated in this manual, and study this section carefully.  
If there are differences between your machine and what is shown in this section, call Technical Support at  
(570) 546-9663 for assistance BEFORE making any changes to the wiring on your machine. An updated  
wiring diagram may be available. Note: Please gather the serial number and manufacture date of your  
machine before calling. This information can be found on the main machine label.  
Wiring Safety Instructions  
SHOCK HAZARD. Working on wiring that is con- WIRE/COMPONENT DAMAGE. Damaged wires  
nected to a power source is extremely dangerous. or components increase the risk of serious per-  
Touching electrified parts will result in personal sonal injury, fire, or machine damage. If you notice  
injury including but not limited to severe burns, that any wires or components are damaged while  
electrocution, or death. Disconnect the power performing a wiring task, replace those wires or  
from the machine before servicing electrical com- components.  
ponents!  
MOTOR WIRING. The motor wiring shown in  
MODIFICATIONS. Modifying the wiring beyond these diagrams is current at the time of printing  
what is shown in the diagram may lead to unpre- but may not match your machine. If you find this  
dictable results, including serious injury or fire. to be the case, use the wiring diagram inside the  
This includes the installation of unapproved after- motor junction box.  
market parts.  
CAPACITORS/INVERTERS. Some capacitors  
WIRE CONNECTIONS. All connections must and power inverters store an electrical charge for  
be tight to prevent wires from loosening during up to 10 minutes after being disconnected from  
machine operation. Double-check all wires dis- the power source. To reduce the risk of being  
connected or connected during any wiring task to shocked, wait at least this long before working on  
ensure tight connections.  
capacitors.  
CIRCUIT REQUIREMENTS. You MUST follow EXPERIENCING DIFFICULTIES. If you are expe-  
the requirements at the beginning of this manual  
riencing difficulties understanding the information  
when connecting your machine to a power source. included in this section, contact our Technical  
Support at (570) 546-9663.  
The photos and diagrams  
included in this section are  
best viewed in color. You  
can view these pages in  
color at www.grizzly.com.  
-35-  
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Wiring Diagram & Electrical Components  
The motor wiring shown here is  
current at the time of printing, but it  
may not match your machine.  
Always use the wiring diagram  
inside the motor junction box.  
Figure 39. Paddle switch.  
Neutral  
Hot  
110 VAC  
5-15 Plug  
(As Recommended)  
Ground  
Paddle Switch  
(viewed from behind)  
Figure 40. Circuit breaker.  
Circuit  
Breaker  
Ground  
15A  
125/250VAC  
2 HP Motor  
-36-  
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SECTION 9: PARTS  
Main  
7
8
9
5
2
6
4
156  
1
10  
11  
12  
23  
24  
18  
19  
25  
28  
31  
168  
2
20  
169  
21  
15  
29  
22  
13  
26  
27  
30  
37  
16  
127  
49  
48  
36  
37  
14  
74 75  
32  
38  
45  
46  
44  
79  
77  
78  
17  
76  
33  
47  
37  
34  
35  
39  
80  
50  
40  
41  
42  
43  
68  
66  
61  
69  
53  
58  
51  
81  
67  
70  
82  
71  
68  
52  
83  
72  
88  
54  
73  
62  
84  
63  
81  
64  
85  
86  
65  
55  
59  
86  
87  
57  
88  
89  
56  
84  
60  
90  
91  
89  
92  
93  
130  
155-1  
99  
158  
90  
91  
97  
89  
155-2  
155-3  
92  
93  
155-4  
100  
94  
97  
131  
100  
99  
95  
94  
96  
101  
102  
155  
114  
115  
116  
117  
118  
119  
103  
104  
105  
106  
107  
108  
109  
110  
157  
122  
123  
121  
113  
111  
120  
-37-  
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Main List  
REF PART #  
DESCRIPTION  
REF PART #  
DESCRIPTION  
1
P0790001  
P0790002  
P0790004  
P0790005  
P0790006  
P0790007  
P0790008  
P0790009  
P0790010  
P0790011  
P0790012  
P0790013  
P0790014  
P0790015  
P0790016  
P0790017  
P0790018  
P0790019  
P0790020  
P0790021  
P0790022  
P0790023  
P0790024  
P0790025  
P0790026  
P0790027  
P0790028  
P0790029  
P0790030  
P0790031  
P0790032  
P0790033  
P0790034  
P0790035  
P0790036  
P0790037  
P0790038  
P0790039  
P0790040  
P0790041  
P0790042  
P0790043  
P0790044  
P0790045  
P0790046  
P0790047  
P0790048  
P0790049  
P0790050  
LEFT CAP  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
96  
97  
99  
100  
P0790051  
P0790052  
P0790053  
P0790054  
P0790055  
P0790056  
P0790057  
P0790058  
P0790059  
P0790060  
P0790061  
P0790062  
P0790063  
P0790064  
P0790065  
P0790066  
P0790067  
P0790068  
P0790069  
P0790070  
P0790071  
P0790072  
P0790073  
P0790074  
P0790075  
P0790076  
P0790077  
P0790078  
P0790079  
P0790080  
P0790081  
P0790082  
P0790083  
P0790084  
P0790085  
P0790086  
P0790087  
P0790088  
P0790089  
P0790090  
P0790091  
P0790092  
P0790093  
P0790094  
P0790095  
P0790096  
P0790097  
P0790099  
P0790100  
FLAT WASHER 8MM  
CAP SCREW M8-1.25 X 20  
CUTTERHEAD  
2
ROLLER END CAP PIN (PLASTIC)  
ROLLER  
4
5
HANDLE CAP  
BLADE LOCATING PIN  
PHLP HD SCR M6-1 X 16  
GIB  
6
CAP SCREW M5-.8 X 25  
KNOB CAP  
7
8
SHOULDER SCREW M8-1.25 X 7, 29L  
KNOB BASE  
KNIFE 12-1/2" X 1/4" X 1/32" (SET OF 2)  
COMPRESSION SPRING  
KEY 5 X 5 X 10  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
HANDLE  
RIGHT CAP  
MOTOR PULLEY  
BUTTON HD CAP SCR M6-1 X 6  
CARRYING GRIP  
BALL BEARING 6203ZZ  
BEARING RETAINER  
CAP SCREW M5-.8 X 10  
CUTTERHEAD PULLEY  
V-BELT 6V 13.5L  
BLADE GUARD  
AIR DUCT  
CAP SCREW M5-.8 X 10  
TAP SCREW M4 X 10  
EXT RETAINING RING 15MM  
CHAIN FOR CUTTERHEAD DRIVE  
SPROCKET 8T  
SCALE INDICATOR  
FENDER WASHER 6MM  
PHLP HD SCR M6-1 X 12  
BLOWER FAN  
SPACER  
FENDER WASHER 6MM  
BUTTON HD CAP SCR M6-1 X 12 LH  
FAN COVER  
CAP SCREW M5-.8 X 30  
CAP SCREW M5-.8 X 35  
CAP SCREW M5-.8 X 27  
OUTSIDE GEAR PLATE  
BALL BEARING 6002ZZ  
GEAR SHAFT  
TAP SCREW M5 X 15  
FAN SHAFT  
TAP SCREW M5 X 12  
DUST GUIDE  
TAP SCREW M4 X 10  
CORD WRAP  
DEFLECTOR  
FAN HOUSING  
SIDE COVER  
BUTTON HD CAP SCR M6-1 X 25  
DUST PORT  
BUTTON HD CAP SCR M6-1 X 12  
DOUBLE GEAR 58T/12T  
GEAR 70T  
EXT RETAINING RING 15MM  
SPROCKET 10T  
SPACER 5 X 20MM FEMALE ENDS  
INSIDE GEAR PLATE  
DOUBLE GEAR 52T/12T  
BUSHING  
CHAIN FOR FEED ROLLERS  
COMPRESSION SPRING (OUTFEED)  
OUTFEED ROLLER  
COMPRESSION SPRING (INFEED)  
INFEED ROLLER  
SPACER 5 X 20MM MALE ENDS  
GEAR 12T  
SPROCKET 8T  
BALL BEARING 6203ZZ  
PHLP HD SCR M5-.8 X 8  
EXT TOOTH WASHER 5MM  
SPACER  
FEED ROLLER RETAINING BLOCK  
FEED ROLLER BRACKET (LEFT)  
CAP SCREW M5-.8 X 10  
FEED ROLLER BRACKET (RIGHT)  
CAP SCREW M5-.8 X 10  
GUIDE  
SET SCREW M5-.8 X 8  
PHLP HD SCR M5-.8 X 10  
CABLE CLAMP  
TABLE  
TOP COVER  
CAP SCREW M5-.8 X 10  
LEADSCREW NUT  
CAP SCREW M5-.8 X 10  
BELT GUARD  
COLUMN LEADSCREW (LEFT)  
COLUMN  
CAP SCREW M5-.8 X 12  
-38-  
Model G0790 (Mfd. Since 9/15)  
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REF PART #  
DESCRIPTION  
REF PART #  
DESCRIPTION  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
111  
113  
114  
115  
116  
117  
118  
119  
P0790101  
P0790102  
P0790103  
P0790104  
P0790105  
P0790106  
P0790107  
P0790108  
P0790109  
P0790110  
P0790111  
P0790113  
P0790114  
P0790115  
P0790116  
P0790117  
P0790118  
P0790119  
COLUMN LEADSCREW (FRONT RIGHT)  
COLUMN  
120  
121  
122  
123  
127  
130  
131  
155  
P0790120  
P0790121  
P0790122  
P0790123  
P0790127  
P0790130  
P0790131  
P0790155  
BUTTON HD CAP SCR M6-1 X 20  
CHAIN  
ELEVATION SCALE  
BASE  
HEX WRENCH 4MM  
KNIFE CHANGING MAGNET  
MOTOR PIVOT ROD  
EXT RETAINING RING 30MM  
BALL BEARING 6000ZZ  
BEARING RETAINER  
SPACER  
CAP SCREW M5-.8 X 10  
COLUMN LEADSCREW (REAR RIGHT)  
MOTOR 2HP 120V 1-PH  
SPROCKET 10T  
155-1 P0790155-1 POWER CORD 14G 3W 72" 5-15P  
155-2 P0790155-2 MOTOR BRUSHES (2-PC SET)  
155-3 P0790155-3 CIRCUIT BREAKER 15A 125/250VAC  
155-4 P0790155-4 GRIZZLY SAFETY PADDLE SWITCH  
FENDER WASHER 4MM  
CAP SCREW M4-.7 X 12  
CAP SCREW M5-.8 X 10  
IDLER BRACKET  
156  
157  
158  
168  
169  
P0790156  
P0790157  
P0790158  
P0790168  
P0790169  
FLAT WASHER 5MM  
LOCK WASHER 4MM  
FLAT WASHER 4MM  
DUST BAG  
FENDER WASHER 5MM  
CAP SCREW M5-.8 X 10  
SPROCKET 10T  
SPACER  
DUST BAG CLAMP ASSEMBLY  
FENDER WASHER 6MM  
Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here  
are available for purchase. Call (800) 523-4777 or visit our online parts store at www.grizzly.com to check for availability.  
-39-  
Model G0790 (Mfd. Since 9/15)  
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Labels & Cosmetics  
161  
MODEL G0790  
121/2" PLANER  
Specifications  
WARNING!  
159  
Motor:  
2
HP, 120V, 1-Ph, 60 Hz, 15A To reduce risk of serious injury when using this machine:  
Max. Depth of Cut Per Pass: 1/32"  
Min. Stock Thickness: 3/16"  
Min. Stock Length: 6"  
Max. Cutting Height: 4-1/2"  
Max. Cutting Width: 12-1/2"  
Feed Rate: 26 FPM  
Cutterhead Speed: 8750 RPM  
Cutterhead: 2" Dia., 2-Knife  
Weight: 65 lbs.  
1. Read and understand owner’s manual before operating.  
2. Always wear approved safety glasses and respirator.  
3. Disconnect power before doing any service on machine.  
160  
4. Only plug power cord into  
a
grounded outlet.  
NOTICE  
5. Do not wear loose clothing, gloves, jewelry, or other  
items that can get entangled. Tie back long hair and roll  
up sleeves.  
Use hand grips to lift planer,  
not rollers. Rollers could be  
damaged if used for lifting.  
6. Ensure machine is correctly set up before starting.  
7. Never cut deeper than 1/32" on  
a
single pass.  
8. Never plane material smaller than 6" long, 3/4" wide, or  
3/16" thick.  
9. Keep hands clear of powered rollers when feeding  
workpiece.  
10. Stand clear of board ends during cutting operation.  
11. Do not plane boards with cracks, loose knots, or other  
defects.  
162  
3092372  
Up  
Down  
Date  
12. Knives are sharp! Use extreme caution when servicing.  
13. Never reach into cutting area during machine operation.  
14. Do not expose to rain or use in wet locations.  
15. Prevent unauthorized use by children or untrained  
users.  
Serial Number  
1 Rev. = 1⁄16"  
Manufactured for Grizzly in China  
166  
WARNING!  
To reduce risk of death  
or serious injury, read  
manual BEFORE using  
machine.  
To get  
a
new manual,  
call (800) 523-4777 or  
go to www.grizzly.com.  
165  
163  
WARNING!  
EYE/EAR/LUNG  
INJURY HAZARD!  
Always wear safety  
glasses, ear protection,  
and respirator when  
using this machine.  
164  
167  
REF PART #  
DESCRIPTION  
REF PART #  
DESCRIPTION  
159  
160  
161  
162  
163  
P0790159  
USE HAND GRIPS NOTICE LABEL  
ELECTRICITY LABEL  
164  
165  
166  
167  
P0790164  
P0790165  
P0790166  
P0790167  
GRIZZLY.COM LABEL  
P0790160  
P0790161  
P0790162  
P0790163  
MODEL NUMBER LABEL  
MACHINE ID LABEL  
READ MANUAL WARNING LABEL  
GRIZZLY GREEN TOUCH-UP PAINT  
REVOLUTION SCALE  
INJURY HAZARD WARNING LABEL  
Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes  
off or becomes unreadable, the owner of this machine MUST replace it in the original location  
before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com.  
-40-  
Model G0790 (Mfd. Since 9/15)  
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-41-  
Model G0790 (Mfd. Since 9/15)  
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-42-  
Model G0790 (Mfd. Since 9/15)  
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WARRANTY CARD  
Name_____________________________________________________________________________  
Street_____________________________________________________________________________  
City _______________________ State_________________________ Zip _____________________  
Phone #____________________ Email _________________________________________________  
Model # ____________________ Order #_______________________ Serial #__________________  
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop  
better products and services. Of course, all information is strictly confidential.  
1. How did you learn about us?  
____ Advertisement  
____ Card Deck  
____ Friend  
____ Website  
____ Catalog  
____ Other:  
2. Which of the following magazines do you subscribe to?  
____ Cabinetmaker & FDM  
____ Family Handyman  
____ Hand Loader  
____ Popular Science  
____ Popular Woodworking  
____ Precision Shooter  
____ Projects in Metal  
____ RC Modeler  
____ Rifle  
____ Shop Notes  
____ Wooden Boat  
____ Woodshop News  
____ Woodsmith  
____ Handy  
____ Woodwork  
____ Home Shop Machinist  
____ Journal of Light Cont.  
____ Live Steam  
____ Woodworker West  
____ Woodworker’s Journal  
____ Other:  
____ Model Airplane News  
____ Old House Journal  
____ Popular Mechanics  
____ Shotgun News  
____ Today’s Homeowner  
____ Wood  
3. What is your annual household income?  
____ $20,000-$29,000  
____ $30,000-$39,000  
____ $40,000-$49,000  
____ $70,000+  
____ $50,000-$59,000  
____ $60,000-$69,000  
4. What is your age group?  
____ 20-29  
____ 30-39  
____ 60-69  
____ 40-49  
____ 70+  
____ 50-59  
5. How long have you been a woodworker/metalworker?  
____ 0-2 Years ____ 2-8 Years  
____ 8-20 Years  
____ 6-9  
____20+ Years  
____10+  
6. How many of your machines or tools are Grizzly?  
____ 0-2 ____ 3-5  
7. Do you think your machine represents a good value?  
8. Would you recommend Grizzly Industrial to a friend?  
_____Yes  
_____Yes  
_____No  
_____No  
9. Would you allow us to use your name as a reference for Grizzly customers in your area?  
Note: We never use names more than 3 times. _____Yes _____No  
10. Comments:_____________________________________________________________________  
_________________________________________________________________________________  
_________________________________________________________________________________  
_________________________________________________________________________________  
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FOLD ALONG DOTTED LINE  
Place  
Stamp  
Here  
GRIZZLY INDUSTRIAL, INC.  
P.O. BOX 2069  
BELLINGHAM, WA 98227-2069  
FOLD ALONG DOTTED LINE  
Send a Grizzly Catalog to a friend:  
Name_______________________________  
Street_______________________________  
City______________State______Zip______  
TAPE ALONG EDGES--PLEASE DO NOT STAPLE  
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WARRANTY & RETURNS  
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from  
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,  
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty  
and any and all warranties that may be implied by law, including any merchantability or fitness, for any par-  
ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent  
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.  
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and  
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.  
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,  
or consequential damages arising from the use of our products.  
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then issue  
you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the carton. We  
will not accept any item back without this number. Proof of purchase must accompany the merchandise.  
The manufacturers reserve the right to change specifications at any time because they constantly strive to  
achieve better quality equipment. We make every effort to ensure that our products meet high quality and  
durability standards and we hope you never need to use this warranty.  
Please feel free to write or call us if you have any questions about the machine or the manual.  
Thank you again for your business and continued support. We hope to serve you again soon.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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