Ryobi Trimmer HT816r, HT818r, HT822r User Guide

HT816r/HT818r/HT822r  
Electric Hedge Trimmer  
OPERATOR’S MANUAL  
FOR QUESTIONS, CALL 1-800-345-8746 in U.S. or  
1-800-265-6778 in CANADA  
IMPORTANT MANUAL  
DO NOT THROW AWAY  
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RULES FOR SAFE OPERATION  
The purpose of safety symbols is to attract your  
DANGER:  
attention to possible dangers. The safety symbols,  
and their explanations, deserve your careful attention  
and understanding. The safety warnings do not by  
themselves eliminate any danger. The instructions or  
warnings they give are not substitutes for proper  
accident prevention measures.  
Failure to obey a safety warning will result in  
serious injury to yourself or to others. Always  
follow the safety precautions to reduce the  
risk of fire, electric shock, and personal injury.  
WARNING:  
SYMBOL MEANING  
Failure to obey a safety warning can result in  
injury to yourself and others. Always follow  
the safety precautions to reduce the risk of  
fire, electric shock, and personal injury.  
SAFETY ALERT SYMBOL:  
Indicates danger, warning, or caution.  
Attention is required in order to avoid serious  
personal injury. May be used in conjunction  
with other symbols or pictographs.  
CAUTION:  
Failure to obey a safety warning may result  
in property damage or personal injury to  
yourself or to others. Always follow the  
safety precautions to reduce the risk of fire,  
electric shock, and personal injury.  
NOTE: Advises you of information or instructions vital to  
the operation or maintenance of the equipment.  
IMPORTANT SAFETY INSTRUCTIONS •  
Do not abuse the power cord. Do not pull or carry the  
WARNING:  
unit by the cord, use cord as a handle, close a door on  
When using this electric Hedge Trimmer,  
basic safety precautions should always be  
followed to reduce the risk of fire, electric  
shock, and personal injury. Carefully read  
and understand the entire Operator's  
Manual before using your Hedge Trimmer.  
Pay close attention to the Operating  
Instructions and Safety Warnings.  
cord, or pull the cord around sharp edges or corners.  
Keep the cord away from heated surfaces, oil and  
sharp edges.  
Turn off all controls before unplugging.  
Do not unplug by pulling on the cord. To unplug, grasp  
the plug, not the cord.  
Keep hair, loose clothing, fingers, and all parts of body  
away from openings and moving parts.  
Do not allow to be used as a toy. Close attention is  
necessary when used by or near children.  
READ ALL INSTRUCTIONS  
Inspect all extension cords and the unit power  
connection periodically. Look closely for deterioration,  
cuts or cracks in the insulation. Also inspect the  
connections for damage. Replace the cords if any  
defects or damage appear.  
WARNING:  
To reduce the risk of fire, electric shock, or injury:  
Do not leave the Hedge Trimmer plugged in. Unplug  
from outlet when not in use, changing attachments,  
blades, or before servicing.  
Risk of cut. Keep hands away from blades. Keep both  
hands on handles when power is on.  
Avoid dangerous environments. Never operate your  
unit in damp or wet conditions. Moisture is a shock  
hazard.  
Do not attempt to remove cut material or hold material  
to be cut when blades are moving. Make sure unit is  
unplugged and the switch is off when clearing jammed  
material from blades. Do not grasp the exposed  
cutting blades or cutting edges when picking up or  
holding the unit. CAUTION - blades coast after unit is  
turned off.  
Do not use the unit in the rain.  
Do not handle the unit with wet hands.  
Use the right tool. Use this unit only as described in  
this manual. Do not use for any job except that for  
which it is intended. Use only the manufacturers  
recommended attachments.  
To reduce the risk of electrical shock, use only with  
an extension cord intended for outdoor use, such as  
SW-A, SOW-A, STW-A, STOW-A, SJW-A, SJOW-A,  
SJTW-A or SJTOW-A.  
Clear the area to be cut before each use. Remove  
all objects such as cords, lights, wire, or string  
which can become entangled in the cutting blade.  
3
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RULES FOR SAFE OPERATION  
To reduce the risk of electrical shock, this unit has a  
FOR SAFE OPERATION  
polarized plug (one blade is wider than the other) and  
will require the use of a polarized extension cord. This  
unit plug will fit into a polarized extension cord only  
one way. If the plug does not fit fully into the extension  
cord, reverse the plug. If the plug still does not fit,  
obtain a correct polarized extension cord. A polarized  
extension cord will require the use of a polarized wall  
outlet. This plug will fit into a polarized wall outlet only  
one way. If the plug does not fit fully into the wall  
outlet, reverse the plug. If the plug still does not fit,  
contact a qualified electrician to install the proper wall  
outlet. Do not change the unit plug, extension cord  
receptacle, or extension cord plug in any way.  
Avoid unintentional starting. Do not carry plugged-in  
unit with your finger on the switch. Be sure switch is  
off when plugging in.  
Always remain alert. Use common sense. To prevent  
injury to yourself and others, do not operate this unit if  
you are fatigued.  
Do not operate the unit while under the influence of  
drugs, alcohol or medication.  
Wear safety glasses or goggles that are marked as  
meeting ANSI Z87.1 standards, and ear/hearing  
protection when operating this unit. Wear a face or  
dust mask if the operation is dusty.  
Ground Fault Circuit Interrupter (GFCI) protection  
should be provided on the circuit(s) or outlet(s) to be  
used for this unit. Receptacles are available having  
built-in GFCI protection and may be used for this  
measure of safety.  
Do not overreach or use the unit from unstable  
surfaces such as ladders, trees, steep slopes,  
rooftops, etc. Keep proper footing and balance at all  
times.  
EXTENSION CORDS: Make sure your extension cord  
is in good condition. When using an extension cord,  
be sure to use a cord that is heavy enough to carry the  
current that your unit will draw. An undersized  
Wear heavy, long pants, boots, gloves and a long  
sleeve shirt. Do not wear loose clothing, jewelry, short  
pants, sandals or go barefoot. Secure hair above  
shoulder level.  
extension cord will cause a drop in line voltage  
resulting in loss of power and overheating. The table  
shows the correct size to use depending on the cord  
length and nameplate amperage rating. If in doubt, use  
the next heavier size line gauge. The smaller the gauge  
number, the heavier the cord. To reduce the possibility  
of disconnection of the unit from the extension cord  
during operation, see Fig. 5, page 7.  
Always stop the motor when cutting is delayed or  
when walking from one cutting location to another.  
Keep unit clean of vegetation and other materials.  
They may become lodged in the cutting blades.  
When operating the hedge trimmer, always hold the  
unit with both hands. Keep a firm grip on both the  
housing grip and front handle. Never grip the unit by  
the guard or use the guard as a handle.  
A nameplate on your unit indicates what voltage it  
uses. Never connect the unit to an AC voltage that  
differs from this voltage.  
Do not force unit. It will do the job better and with less  
likelihood of injury at a rate for which it was designed.  
MINIMUM WIRE SIZE FOR EXTENSION CORDS  
FOR 120 VOLT APPLIANCES  
Use only genuine Ryobi replacement parts and  
accessories for this unit. These are available from  
your authorized service dealer. Use of any non Ryobi  
parts or accessories could lead to serious injury to the  
user, or damage to the unit, and void your warranty.  
Cord length (ft)  
Amperage Rating  
1 to 10 amps  
10 to 12 amps  
12 to 16 amps  
25  
50  
100  
150  
Wire size (AWG)  
18  
16  
14  
16  
16  
12  
14  
14  
12  
12  
NOT  
This unit is provided with double-insulation. Use only  
identical replacement parts. See instructions for  
Servicing of Double-Insulated Units.  
RECOMMENDED  
If you strike or become entangled with a foreign  
object, stop the unit immediately and check for  
damage. Do not operate before repairing damage. Do  
not operate the unit with loose or damaged parts.  
BEFORE OPERATING  
Read the instructions carefully. Be familiar with the  
controls and proper use of the unit.  
Maintain the unit with care. Keep cutting edge sharp  
and clean for best performance and to reduce the risk  
of injury. Follow instructions for lubricating and  
changing accessories. Keep handles dry, clean and  
free from oil and grease. Always use a clean cloth  
when cleaning. Never use brake fluid, gasoline,  
petroleum-based products, or any strong solvents to  
clean your tool.  
Children and teens under the age of 15 must not use  
the unit, except for teens guided by an adult.  
Before each use, thoroughly inspect your unit for  
loose or damaged parts. Do not use until adjustments  
or repairs are made.  
All guards and safety attachments must be installed  
properly before operating the unit.  
Use the unit only in daylight or good artificial light.  
Keep all bystanders, especially children and pets, at  
least 50 feet (15 m) away from the unit while operating.  
4
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RULES FOR SAFE OPERATION  
Check for damaged parts. Before further use of the  
Never douse or squirt the unit with water or any other  
liquid. Keep handles dry, clean and free from debris.  
Clean after each use, see Cleaning and Storage  
instructions.  
unit, a guard or other part that is damaged should be  
carefully checked to determine that it will operate  
properly and perform its intended function. Check for  
alignment of moving parts, binding of moving parts,  
breakage of parts, mounting, and any other condition  
that may effect the units operation. A guard or other  
part that is damaged should be properly repaired or  
replaced by an authorized service dealer unless  
indicated elsewhere in this manual.  
Be sure to secure the unit while transporting.  
Keep these instructions. Refer to them often and use  
them to instruct other users. If you loan someone this  
unit, also loan them these instructions.  
OTHER SAFETY WARNINGS  
Store the unit inside in a dry place, either locked up or  
up high to prevent unauthorized use or damage.  
Keep out of the reach of children.  
SAVE THESE INSTRUCTIONS  
SAFETY AND INTERNATIONAL SYMBOLS  
This operator's manual describes safety and international symbols and pictographs that may appear on this product.  
Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.  
SYMBOL  
MEANING  
SAFETY ALERT SYMBOL  
Indicates danger, warning, or caution. May be used in conjunction with other  
symbols or pictographs.  
WARNING - READ OPERATOR'S MANUAL  
Read the operator's manual before starting or operating this unit. Failure to follow operating  
instructions and safety precautions in the operator's manual can result in serious injury to the  
operator and/or bystanders.  
FOR SERVICE INFORMATION, CALL:  
USA:  
CANADA:  
1-800-345-8746  
1-800-265-6778  
WEAR EYE AND HEARING PROTECTION  
WARNING: Wear safety glasses or goggles that are marked as meeting ANSI Z87.1  
standards, and ear/hearing protection when operating this unit.  
DO NOT USE IN THE RAIN  
WARNING: Avoid dangerous environments. Never operate your unit in the rain, or in  
damp or wet conditions. Moisture is a shock hazard.  
KEEP BYSTANDERS AWAY  
WARNING: Keep all bystanders, especially children and pets, at least 50 feet (15 m) from  
the operating area.  
KEEP HANDS AWAY FROM BLADES  
WARNING: Moving blades can cause severe injury. Do not touch the blades when  
starting or while operating the unit.  
5
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RULES FOR SAFE OPERATION  
Lock-On Tab  
KNOW YOUR UNIT  
APPLICATION  
This unit is intended for household purpose only.  
Lock-Off Button  
Use the Hedge Trimmer for;  
Trimming and the forming of hedges, shrubs, and  
bushes with a branch diameter of up to 3/8 inch.  
Blade Guard  
Front Handle  
Switch Trigger  
Rear Handle  
Extension Cord  
Retainer  
Cutting Blade  
ASSEMBLY INSTRUCTIONS  
NOTE: The hollow side of the front handle faces the  
INSTALLING FRONT HANDLE  
rear handle when installed properly.  
After removing your hedge trimmer from its carton,  
remove the front handle, screw, and lock nut from the  
plastic bag. Using a flat blade screwdriver, which is the  
only tool needed for assembly, install as follows:  
2. Spread the ears of the front handle and fit into the  
handle slots on the motor housing (Fig. 1).  
NOTE: For your convenience and ease of assembly one  
of the ears on the front handle has been keyed.  
WARNING: To prevent serious personal  
injury, the handle must be installed when  
operating this unit.  
3. Place your trimmer on a workbench and place lock  
nut into molded slot on right side of the front handle.  
4. Insert screw from left to right through the front  
handle and motor housing (Fig. 2).  
1. Turn the front handle so that the flat surface faces  
the blade guard of your trimmer.  
5. Tighten screw and lock nut securely with a flat blade  
screwdriver.  
Blade Guard  
Front Handle  
Screw  
Rear Handle  
Handle Slot  
Screw  
Lock Nut  
Ears  
Lock Nut  
Fig. 1  
Fig. 2  
6
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OPERATING INSTRUCTIONS  
TO TURN YOUR HEDGE TRIMMER ON  
Lock-Off Button  
WARNING: Before connecting your hedge  
trimmer to power supply source, always  
check to be sure it is not in lock-on position  
(depress and release the switch trigger).  
Failure to do so could result in accidental  
starting of your trimmer resulting in possible  
serious injury. Also, do not lock the trigger on  
jobs where your trimmer may need to be  
stopped suddenly.  
Your hedge trimmer is equipped with a lock-off button,  
that reduces the possibility of accidental starting.  
1. Slide the lock-off button forward (Fig. 3).  
2. Depress and hold the switch trigger.  
3. Release the lock-off button.  
Switch Trigger  
Fig. 3  
NOTE: The lock-off button is located on top of the  
handle. The lock resets each time the switch  
trigger is released.  
Lock-On Tab  
LOCK-ON FEATURE  
Your hedge trimmer is also equipped with a lock-on  
feature, which is convenient when continuous trimming  
for extended periods of time is required.  
Lock-Off Button  
To Lock-On  
1. Slide the lock-off button forward (Fig. 4).  
2. Depress and hold the switch trigger.  
3. Release the lock-off button.  
4. Pull lock-on tab back with your thumb and hold.  
5. Release switch trigger, then release lock-on tab.  
To Release the Lock-On  
1. Depress the switch trigger and release it.  
Switch Trigger  
Fig. 4  
If you have the lock-on feature engaged during use and  
your hedge trimmer becomes disconnected from power  
supply, disengage the lock-on feature immediately.  
EXTENSION CORD RETAINER  
Alternate Method  
Extension Cord  
Retainer  
An extension cord retainer has been provided to prevent  
extension cord from becoming disconnected from your  
trimmer during use. It is molded into the switch handle of  
your hedge trimmer. Plug extension cord into plug  
recess below switch handle, then snugly fit cord into  
retainer as shown in Figure 5.  
of Securing  
Extension Cord  
Extension cord retainer works best with 16 A.W.G.  
extension cords. When using 14 A.W.G. extension  
cords the cord may be tight in extension cord retainer.  
We suggest an alternate method as shown in figure 5 for  
securing tight extension cords.  
Fig. 5  
7
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OPERATING INSTRUCTIONS  
USING THE HEDGE TRIMMER  
TO TRIM A HEDGE  
WARNING: If any parts are missing, damaged,  
WARNING: Clear the area to be cut before  
each use. Remove all objects such as cords,  
lights, wire, or string which can become  
entangled in the cutting blade.  
or broken do not operate your trimmer until they  
have been replaced. Failure to do so could result  
in possible serious personal injury.  
1. Use hedge trimmer properly. Before starting hedge  
trimmer, hold the unit with both hands and face the  
cutting blade away from you (Fig. 6).  
WARNING: To prevent serious personal  
injury, always use both the front handle and  
rear handle to hold the hedge trimmer during  
operation.  
2. Always keep the cord behind the hedge trimmer  
when in use. Do not place it over the hedge where it  
may be cut by the blade.  
Use the hedge trimmer for trimming and the forming of  
hedges, shrubs, and bushes with a branch diameter of  
up to 3/8 inch.  
DANGER: If blade jams on any electrical  
cord or line, DO NOT TOUCH THE BLADE!  
IT CAN BECOME ELECTRICALLY LIVE AND  
VERY DANGEROUS. Continue to hold your  
trimmer by the insulated handles and  
immediately disconnect the damaged  
electrical cord or line from the power source.  
Failure to heed this Danger will result in  
serious personal injury and possibly death.  
WARNING: To prevent serious personal  
injury, keep hands away from blades. Do not  
attempt to remove cut material or hold material  
to be cut when blades are moving. Make sure  
unit is unplugged and the switch is off when  
clearing jammed material from blades.  
Do not grasp the exposed cutting blades or  
cutting edges when picking up or holding  
the unit.  
2. If desired, you can use a string to help cut your  
hedge level. Decide how high you want the hedge.  
Then, stretch a piece of string along the hedge at  
this height. Trim the hedge just above this guide line  
of string. Trim the side of a hedge so that it will be  
slightly narrower at the top (Fig. 7). More of the  
hedge will be exposed when shaped this way, and it  
will be more uniform.  
WARNING: Never use guard as a handle.  
Never grasp the unit by the guard. Failure to  
heed this warning can result in serious  
personal injury.  
For your protection there is a blade guard between the  
front handle and the blade.  
1. Cord secured to unit and plugged in.  
3. Wear gloves when trimming thorny or prickly growth.  
When trimming new growth, use a wide sweeping  
action, so that the stems are fed directly into the  
cutting blade. Older growth will have thicker stems  
and will be trimmed easiest by using a sawing  
movement.  
2. With the blade directed away, hold the unit by the  
front and rear handle (Fig. 6).  
3. Start the unit with the blades away from the hedge to  
be trimmed.  
Do not try to cut stems that are larger than 3/8 inch  
thick, or those obviously too large to feed into the  
cutting blade. Use a non-powered hand saw or pruning  
saw to trim large stems.  
General Tips:  
Keep from trimming too much at one time. This can  
cause the blades to bind and slow, reducing the  
cutting efficiency.  
Do not force the unit through dense growth. If the  
blades slow down, reduce your pace.  
Fig. 6  
Fig. 7  
8
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MAINTENANCE AND REPAIR INSTRUCTIONS  
3. Clamp the blade assembly in a vise and file the  
WARNING: When servicing, use only  
identical Ryobi replacement parts. Use of  
any other parts may create a hazard or cause  
product damage.  
exposed cutting surface of each blade tooth with an  
8 inch fine round file, 1/4 in. or 7/32 in. diameter. Be  
sure to retain the original angle of tooth when filing.  
4. Remove the hedge trimmer from the vise, restart it,  
and stop it so that the unsharpened edges of the  
blade teeth are exposed.  
WARNING: To avoid serious personal  
injury, be sure the unit is off and unplugged  
before cleaning or performing any  
maintenance on it.  
5. Disconnect the tool and repeat the sharpening  
procedure as described above.  
GENERAL RECOMMENDATIONS  
The warranty on this unit does not cover items that have  
been subjected to operator abuse or negligence. To  
receive full value from the warranty, the operator must  
maintain the unit as instructed in this operators manual.  
BEFORE EACH USE CHECK FOR  
DAMAGED/WORN PARTS  
Check for damaged parts. Before further use of the  
unit, a guard or other part that is damaged should be  
carefully checked to determine that it will operate  
properly and perform its intended function. Check for  
alignment of moving parts, binding of moving parts,  
breakage of parts, mounting, and any other condition  
that may effect the units operation. A guard or other  
part that is damaged should be properly repaired or  
replaced by an authorized service dealer unless  
indicated elsewhere in this manual.  
Fig. 8  
BLADE LUBRICATION  
AFTER EACH USE CLEAN UNIT  
AND LABELS  
Clean the unit using a damp cloth with a mild  
detergent.  
Disconnect hedge trimmer from power supply.  
For easier operation and longer blade life, lubricate the  
hedge trimmer blade before and after each use. Before  
lubricating, be sure the switch is in the off position and  
the tool is disconnected from the power supply. Apply  
light machine oil along the edge of the top strap as  
shown in figure 9.  
NOTE: Do not use any strong detergents on the plastic  
housing or the handle. They can be damaged by  
certain household cleaners that contain aromatic  
oils such as pine and lemon, and by solvents  
such as kerosene.  
CAUTION: Some spray-on lubricants contain  
solvents and will cause some types of grease  
to break-down. To prevent damage to the  
unit, only use a quality machine oil.  
WARNING: Do not at any time let brake  
fluids, gasoline, petroleum-based products,  
penetrating oils, etc. come in contact with  
plastic parts. They contain chemicals that  
can damage, weaken, or destroy plastic.  
Your trimmer should be stopped, disconnected, and  
oiled occasionally during use.  
Wipe off the unit with a clean, dry, soft cloth.  
Keep handles dry, clean and free from oil and grease  
at all times.  
SHARPENING THE CUTTER BLADE  
WARNING: During these procedures, you will  
need to connect the unit to power. To avoid  
serious personal injury, be sure to disconnect  
the power when stated.  
1. Allow your hedge trimmer to come to a stop with the  
cutter blade and guard positioned as shown in  
Figure 8. This will allow clearance for the file  
between cutter teeth and guard teeth.  
2. Disconnect Hedge Trimmer from power supply.  
Fig. 9  
9
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MAINTENANCE AND REPAIR INSTRUCTIONS  
BLADE REPLACEMENT  
WARNING: To avoid serious personal  
injury, be sure the unit is off and unplugged  
before cleaning or performing any  
maintenance on it.  
Blade Screws  
WARNING: When servicing, use only  
identical Ryobi replacement parts. Use of  
any other parts may create a hazard or cause  
product damage.  
WARNING: To prevent serious personal  
injury, wear gloves when handling, removing  
or installing the cutting blades. When  
handling blade assembly, do not place your  
hand or fingers between blades or in any  
position where they could get pinched or cut.  
Drive Washer  
Disconnect hedge trimmer from power supply.  
1. Remove blade cover screw (Fig. 10).  
2. Remove blade cover: To remove, push blade cover  
forward and lift from hedge trimmer.  
3. Remove blade screws (Fig. 11).  
NOTE: A flat blade or # T20 Torx bit screwdriver. is  
required to remove blade screws.  
4. Remove grease cover and blade assembly.  
5. Make sure drive washer remains installed on drive  
pin (Fig. 11).  
Fig. 11  
6. Align slot in new blade assembly and grease cover  
with drive washer on gear assembly (Fig. 12).  
7. After aligning, continue to hold blade assembly in  
place, then manually slide blade assembly back and  
forth until screw holes in grease cover align with  
screw holes in gear housing (Fig. 13).  
WARNING: Blades are sharp. When  
manually sliding blade assembly, do not  
place your hand or fingers between blades  
or in any position where they could get  
pinched or cut.  
Fig. 10  
10  
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MAINTENANCE AND REPAIR INSTRUCTIONS  
Blade Cover  
Screw  
Fig. 12  
Fig. 14  
Fig. 13  
8. Replace blade screws. Tighten screws securely.  
9. Replace blade cover screw (Fig. 14).  
NOTE: Do not tighten blade cover screw until blade  
cover has been replaced.  
10. Replace blade cover. Place rear tab inside housing,  
align front tabs with slots in housing, then slide blade  
cover back into its correct position (Fig. 15).  
11. Tighten blade cover screw securely.  
Fig. 15  
WARNING: Make sure blade cover is  
replaced before connecting your hedge  
trimmer to power supply. Failure to do so will  
expose internal parts which could cause an  
accident or electrical shock resulting in  
serious injury.  
NOTE: If binding occurs after replacing blade assembly,  
repeat the steps above for reassembly.  
11  
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MAINTENANCE AND REPAIR INSTRUCTIONS  
INSPECT EXTENSION CORDS  
WARNING: To avoid serious  
personal injury, be sure the unit is off and  
unplugged before cleaning or performing  
any maintenance on it.  
Inspect all extension cords periodically. Look closely for  
deterioration, cuts or cracks in the insulation. Inspect the  
connectors for damage. Replace cords if defective or  
damaged.  
SERVICING OF DOUBLE INSULATED UNITS  
This unit is double-insulated. In a double-insulated unit,  
two systems of insulation are provided instead of  
grounding. No means of grounding are provided on a  
double-insulated unit, nor should a means for grounding  
be added to this unit.  
STORAGE  
Store the unit indoors, away from moisture and  
harmful substances such as fertilizers and solvents.  
Store the unit in a dry, well ventilated area.  
Servicing a double-insulated unit requires extreme care  
and knowledge of the system, and should be done only  
by qualified service personnel. Replacement parts for a  
double-insulated unit must be identical to the parts they  
replace. Refer any repair to an authorized service dealer.  
A double-insulated unit is marked with the words  
Store the unit inside in a dry place, either locked up  
or up high to prevent unauthorized use or damage.  
Keep out of the reach of children.  
DOUBLE INSULATIONor DOUBLE INSULATED.”  
CLEANING THE UNIT  
1. With the switch in the OFF position, disconnect the  
Hedge Trimmer from the power source.  
2. Use a small brush or the air discharge of a vacuum  
cleaner brush to keep the air vents free of  
obstructions.  
3. Do not use strong detergents on the plastic housing  
or components. These can be damaged by certain  
household cleaners that contain aromatic oils such  
as pine and lemon, and by solvents such as  
kerosene or acetone. Moisture can also cause a  
shock hazard. Wipe off any moisture with a soft dry  
cloth.  
SPECIFICATIONS  
Motor Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Volts AC, 60 Hz  
Motor Amperage  
Model HT816r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4 Amps  
Model HT818r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6 Amps  
Model HT822r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9 Amps  
Blade Length  
Model HT816r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 inches (40.6 cm)  
Model HT818r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 inches (46.0 cm)  
Model HT822r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 inches (56.0 cm)  
Cutting Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Action  
Cutting Speed (no load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 3400 SPM  
Operating Weight  
Model HT816r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.42 lbs(2.46 kg)  
Model HT818r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.56 lbs(2.52 kg)  
Model HT822r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.96 lbs(2.70 kg)  
12  
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REPLACEMENT PARTS  
4
7
1
2
5
8
6
3
Item Part No. Description  
1
1
1
2
3
4
5
6
7
8
180182  
180183  
180184  
180185  
180398  
180049  
180048  
180050  
181424  
181422  
REPLACEMENT BLADE - Model HT816r  
REPLACEMENT BLADE - Model HT818r  
REPLACEMENT BLADE - Model HT822r  
BLADE PLATE  
BLADE SCREW  
FRONT (WRAP-AROUND) HANDLE  
FRONT HANDLE SCREW  
LOCK NUT  
BLADE COVER SCREW  
BLADE COVER  
13  
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LIMITED TWO-YEAR WARRANTY  
RYOBI OUTDOOR PRODUCTS warrants each new  
ALL IMPLIED WARRANTIES ARE LIMITED IN  
DURATION TO THE TWO (2) YEAR WARRANTY  
PERIOD OR NINETY (90) DAYS FOR PRODUCTS  
USED FOR ANY COMMERCIAL PURPOSE.  
RYOBI Product for two (2) years according to the  
following terms.  
This warranty extends to the original retail purchaser  
only and commences on the date of original retail  
purchase.  
ACCORDINGLY, ANY SUCH IMPLIED WARRANTIES  
INCLUDING MERCHANTABILITY, FITNESS FOR A  
PARTICULAR PURPOSE, OR OTHERWISE, ARE  
DISCLAIMED IN THEIR ENTIRETY AFTER THE  
EXPIRATION OF THE APPROPRIATE TWO-YEAR  
OR NINETY DAY WARRANTY PERIOD. RYOBIS  
OBLIGATION UNDER THIS WARRANTY, IS STRICTLY  
AND EXCLUSIVELY LIMITED TO THE REPAIR OR  
REPLACEMENT OF DEFECTIVE PARTS, AND ROP  
DOES NOT ASSUME OR AUTHORIZE ANYONE TO  
ASSUME FOR THEM ANY OTHER OBLIGATION.  
SOME STATES DO NOT ALLOW LIMITATIONS ON  
HOW LONG AN IMPLIED WARRANTY LASTS, SO  
THE ABOVE LIMITATION MAY NOT APPLY TO YOU.  
Any part of the RYOBI Product manufactured or  
supplied by RYOBI and found in the reasonable  
judgement of RYOBI to be defective in material or  
workmanship will be repaired or replaced by an  
authorized RYOBI service dealer without charge for  
parts and labor.  
The RYOBI Product including any defective part must  
be returned to an authorized service dealer within the  
warranty period. The expense of delivering the RYOBI  
Product to the dealer for warranty work and the  
expense of returning it back to the owner after repair  
or replacement will be paid for by the owner. RYOBIs  
responsibility in respect to claims is limited to making  
the required repairs or replacements and no claim of  
breach of warranty shall be cause for cancellation or  
rescission of the contract of sale of any RYOBI  
Product. Proof of purchase will be required by the  
dealer to substantiate any warranty claim. All warranty  
work must be performed by an authorized RYOBI  
service dealer.  
RYOBI ASSUMES NO RESPONSIBILITY FOR  
INCIDENTAL, CONSEQUENTIAL OR OTHER  
DAMAGES INCLUDING, BUT NOT LIMITED TO  
EXPENSE OF RETURNING THE RYOBI PRODUCT  
TO AN AUTHORIZED SERVICE DEALER AND  
EXPENSE OF DELIVERING IT BACK TO THE  
OWNER, MECHANICS TRAVEL TIME, TELEPHONE  
OR TELEGRAM CHARGES, RENTAL OF A LIKE  
PRODUCT DURING THE TIME WARRANTY SERVICE  
IS BEING PERFORMED, TRAVEL, LOSS OR DAMAGE  
TO PERSONAL PROPERTY, LOSS OF REVENUE,  
LOSS OF USE OF THE PRODUCT, LOSS OF TIME,  
OR INCONVENIENCE. SOME STATES DO NOT  
ALLOW THE EXCLUSION OR LIMITATION OF  
INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO  
THE ABOVE LIMITATION OR EXCLUSION MAY NOT  
APPLY TO YOU.  
This warranty is limited to ninety (90) days from the  
date of original retail purchase for any RYOBI Product  
that is used for rental or commercial purposes, or any  
other income-producing purpose.  
This warranty does not cover any RYOBI Product that  
has been subject to misuse, neglect, negligence, or  
accident, or that has been operated in any way  
contrary to the operating instructions as specified in  
the RYOBI Operators Manual. This warranty does not  
apply to any damage to the RYOBI Product that is the  
result of improper maintenance or to any RYOBI  
Product that has been altered or modified so as to  
adversely affect the product's operation, performance  
or durability or that has been altered or modified so as  
to change its intended use. The warranty does not  
extend to repairs made necessary by normal wear or  
by the use of parts or accessories which are either  
incompatible with the RYOBI Product or adversely  
affect its operation, performance or durability.  
This warranty gives you specific legal rights, and you  
may also have other rights which vary from state to  
state.  
This warranty applies to all RYOBI Products  
manufactured by RYOBI and sold in the United States  
and Canada.  
To locate your nearest service dealer dial  
1-800-345-8746 in the United States or  
1-800-265-6778 in Canada.  
In addition, this warranty does not cover:  
A. Wear items - Blades.  
RYOBI reserves the right to change or improve the  
design of any RYOBI Product without assuming  
any obligation to modify any product previously  
manufactured.  
RYOBI OUTDOOR PRODUCTS  
550 N. 54th Street  
Chandler, AZ 85226 U.S.A.  
RYOBI CANADA INC.  
275 Industrial Rd  
Cambridge, Ontario N1R 6K2 CANADA  
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.  
FOR QUESTIONS CALL 1-800-345-8746 IN U.S.  
OR 1-800-265-6778 IN CANADA  
OPERATORS MANUAL PART NO. 182556  
PRINTED IN U.S.A.  
REV. A (51650)  
12/99  
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