Ryobi Saw C358 User Guide

OPERATOR’S MANUAL  
14 in. Abrasive Cut-Off Machine  
C358  
Your cut-off machine has been engineered and manufactured to Ryobi’s high standard for dependability, ease of  
operation, and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.  
WARNING: To reduce the risk of injury, the user must read and understand the operator's manual before using  
this product.  
Thank you for buying a Ryobi product.  
SAVE THIS MANUAL FOR FUTURE REFERENCE  
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GENERAL SAFETY RULES  
into moving parts. Rubber gloves and nonskid footwear  
are recommended when working outdoors. Also wear  
protective hair covering to contain long hair.  
WARNING:  
Read and understand all instructions. Failure to follow  
all instructions listed below, may result in electric shock,  
fire and/or serious personal injury.  
nALWAYS WEAR SAFETY GLASSES WITH SIDE  
SHIELDS. Everyday eyeglasses have only impact-  
resistant lenses; they are NOT safety glasses.  
nSECURE WORK. Use clamps or a vise to hold work  
when practical. It's safer than using your hand and  
frees both hands to operate tool.  
READ ALL INSTRUCTIONS  
nKNOW YOUR POWER TOOL. Read the operator's  
manual carefully. Learn the cut-off machine's  
applications and limitations as well as the specific  
potential hazards related to this tool.  
nDON'T OVERREACH. Keep proper footing and balance  
at all times.  
nMAINTAIN TOOLS WITH CARE. Keep tools  
sharp and clean for better and safer performance.  
Follow instructions for lubricating and changing  
accessories.  
nGUARD AGAINST ELECTRICAL SHOCK BY  
PREVENTING BODY CONTACT WITH GROUNDED  
SURFACES. For example: pipes, radiators, ranges,  
refrigerator enclosures.  
nDISCONNECT TOOLS. When not in use, before  
servicing, or when changing attachments, wheels,  
bits, cutters, etc., all tools should be disconnected.  
nKEEP GUARDS IN PLACE and in working order. Never  
operate the tool with any guard or cover removed.  
Make sure all guards are operating properly before  
each use.  
nAVOID ACCIDENTAL STARTING. Be sure switch is  
off when plugging in.  
nREMOVE ADJUSTING KEYS AND WRENCHES.  
Form habit of checking to see that keys and adjusting  
wrenches are removed from tool before turning it on.  
nUSE RECOMMENDED ACCESSORIES. The use of  
improper accessories may cause risk of injury.  
nKEEP WORK AREA CLEAN. Cluttered areas and  
benches invite accidents. DO NOT leave tools or  
material on the machine while it is in operation.  
nNEVER STAND ON TOOL. Serious injury could occur if  
the tool is tipped or if the cutting wheel is unintentionally  
contacted.  
nAVOID DANGEROUS ENVIRONMENT. Don't use  
power tools in damp or wet locations or expose to  
rain. Keep work area well lit.  
nCHECK DAMAGED PARTS. Before further use of the  
tool, 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 conditions  
that may affect its operation. A guard or other part that  
is damaged must be properly repaired or replaced by  
an authorized service center to avoid risk of personal  
injury.  
nKEEP CHILDREN AND VISITORS AWAY. All visitors  
should wear safety glasses and be kept a safe distance  
from work area. Do not let visitors contact tool or  
extension cord while operating.  
nMAKE WORKSHOP CHILDPROOF with padlocks or  
master switches, or by removing starter keys.  
nDON'T FORCE TOOL. It will do the job better and  
nNEVER LEAVE TOOL RUNNING UNATTENDED.  
TURN POWER OFF. Don't leave tool until it comes to  
a complete stop.  
safer at the feed rate for which it was designed.  
nUSE RIGHT TOOL. Don't force tool or attachment  
to do a job it was not designed for. Don't use it for a  
purpose not intended.  
nPROTECT YOUR LUNGS. Wear a face or dust mask  
if the cutting operation is dusty.  
nMAKE SURE YOUR EXTENSION CORD IS IN GOOD  
CONDITION. When using an extension cord, be sure  
to use one heavy enough to carry the current your  
product will draw. An undersized cord will cause a  
drop in line voltage resulting in loss of power and  
overheating. A wire gage size (A.W.G.) of at least 14  
is recommended for an extension cord 25 feet or less  
in length. If in doubt, use the next heavier gage. The  
smaller the gage number, the heavier the cord.  
nPROTECT YOUR HEARING. Wear hearing protection  
during extended periods of operation.  
nDON'T ABUSE CORD. Never yank cord to disconnect  
from receptacle. Keep cord from heat, oil, and sharp  
edges.  
nUSE OUTDOOR EXTENSION CORDS. When tool is  
used outdoors, use only extension cords with approved  
ground connection that are intended for use outdoors  
and so marked.  
nDRESSPROPERLY. Donotwearlooseclothing, gloves,  
neckties, or jewelry. They can get caught and draw you  
nWHEELS COAST AFTER TURN OFF.  
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GENERAL SAFETY RULES  
nNEVER USE IN AN EXPLOSIVE ATMOSPHERE. nINSPECT EXTENSION CORDS PERIODICALLY and  
Normal sparking of the motor could ignite fumes.  
replace if damaged.  
nINSPECT TOOL CORDS PERIODICALLY. If damaged, nKEEP TOOL DRY, CLEAN, AND FREE FROM OIL AND  
have repaired by a qualified service technician at an  
authorizedservicefacility. Theconductorwithinsulation  
having an outer surface that is green with or without  
yellow stripes is the equipment-grounding conductor.  
If repair or replacement of the electric cord or plug is  
necessary, do not connect the equipment-grounding  
conductor to a live terminal. Repair or replace a  
damaged or worn cord immediately. Stay constantly  
aware of cord location and keep it well away from the  
rotating wheel.  
GREASE. Always use a clean cloth when cleaning.  
Never use brake fluids, gasoline, petroleum-based  
products, or any solvents to clean tool.  
nSTAY ALERT AND EXERCISE CONTROL. Watch what  
you are doing and use common sense. Do not operate  
tool when you are tired. Do not rush.  
nDO NOT USE TOOL IF SWITCH DOES NOT TURN  
IT ON AND OFF. Have defective switches replaced by  
an authorized service center.  
SPECIFIC SAFETY RULES  
nUSEONLYCORRECTWHEELS.Donotusewheelswith  
incorrect size holes. Never use wheel washers or wheel  
screws that are defective or incorrect. The maximum  
wheel capacity of your cut-off machine is 14 in.  
nDONOTREMOVETHEMACHINE'SWHEELGUARDS.  
Never operate the machine with any guard or cover  
removed. Make sure all guards are operating properly  
before each use.  
nKEEP HANDS AWAY FROM CUTTING AREA. Keep  
hands away from wheel. Do not reach underneath work  
or around or under the wheel while the wheel is rotating.  
Do not attempt to remove cut material while wheel is  
moving.  
nALWAYS SUPPORT LONG MATERIAL. To minimize risk  
of tipping machine, always support long material.  
nBEFORE MAKING A CUT, BE SURE ALL ADJUST-  
MENTS ARE SECURE.  
nALWAYS USE THE VISE CLAMP to secure the  
material.  
nAVOID AWKWARD OPERATIONS AND HAND  
POSITIONS where a sudden slip could cause your hand  
to move into the wheel. ALWAYS make sure you have  
good balance.  
nNEVER stand or have any part of your body in line with  
the path of the wheel.  
nALWAYS release the power switch and allow the wheel  
to stop rotating before raising wheel guard or removing  
material.  
nDO NOT TURN THE MOTOR SWITCH ON AND OFF  
RAPIDLY.Thiscouldcausethewheeltoloosenandcould  
create a hazard. Should this ever occur, stand clear and  
allow the wheel to come to a complete stop. Disconnect  
your cut-off machine from the power supply and securely  
retighten the wheel arbor bolt after checking the wheel  
for damage.  
nWHEN SERVICING USE ONLY IDENTICAL RIDGID  
REPLACEMENT PARTS. Use of any other parts may  
create a hazard or cause product damage.  
nNEVER leave the cut-off machine unattended while  
connected to a power source.  
nNEVER TOUCH WHEEL or other moving parts during  
use.  
nIFANYPARTOFTHISCUT-OFFMACHINEISMISSING  
or should break, bend, or fail in any way, or should any  
electrical component fail to perform properly, shut off  
the power switch, remove the machine plug from the  
power source and have damaged, missing, or failed parts  
replaced before resuming operation.  
nMAKE SURE THE CUT-OFF WHEEL IS SECURELY  
MOUNTED as described in the operating instructions  
before connecting the tool to a power supply. Do not  
tighten wheel excessively, since this can cause cracks.  
nCHECK THE WHEEL FOR FISSURES AND CRACKS,  
and test for normal operation prior to use.  
nNEVER START THE CUT-OFF MACHINE WHEN THE  
WHEEL IS IN CONTACT WITH THE MATERIAL.  
nNEVER cut more than one piece of material at a time.  
DO NOT STACK more than one piece of material on the  
machine base at a time.  
nNEVER PERFORM ANY OPERATION "FREEHAND".  
Always secure the material to be cut in the vise.  
nNEVER hand hold a piece of material. Material will  
become very hot while being cut.  
nNEVER reach behind, under, or within three inches of the  
wheel and its cutting path with your hands and fingers  
for any reason.  
nONLY USE A CUT-OFF WHEEL RATED FOR 3900  
RPM OR GREATER and manufactured in compliance  
with ANSI B7.1. Always store wheels in a dry place with  
little temperature variation.  
nNEVER reach to pick up a piece of material, a piece of  
scrap, or anything else that is in or near the cutting path  
of the wheel.  
4
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SPECIFIC SAFETY RULES  
nALWAYS EASE THE ABRASIVE WHEEL AGAINST nRISK OF FIRE OR EXPLOSION. This product has parts  
THE MATERIAL when starting to cut. A harsh impact  
can break the wheel.  
nBEFORE CUTTING press the trigger switch and allow  
the cut-off wheel to reach full speed.  
such as snap switches, receptacles, and the like, which  
tend to produce arcs or sparks. Therefore, when located  
in a garage, the machine should be 18 in. above the floor  
and located in a separate room.  
nDO NOT OPERATE THIS TOOL WHILE UNDER  
THE INFLUENCE OF DRUGS, ALCOHOL, OR ANY  
MEDICATION.  
nALWAYS STAY ALERT! Do not allow familiarity (gained  
from frequent use of your cut-off machine) to cause a  
careless mistake. ALWAYS REMEMBER that a careless  
fraction of a second is sufficient to inflict severe injury.  
nMAKESURETHEWORKAREAHASAMPLELIGHTING  
to see the work and that no obstructions will interfere with  
safe operation BEFORE performing any work using your  
cut-off machine.  
nUSE ONLY FLANGES furnished with this cut-off  
machine.  
nDO NOT OVERTIGHTEN THE WHEEL NUT. Excessive  
tightening can cause the whee to crack during  
operation.  
nREPLACE A CRACKED WHEEL IMMEDIATELY.  
nSAVE THESE INSTRUCTIONS. Refer to them frequently  
and use them to instruct other users. If you loan someone  
this tool, loan them these instructions also.  
nFREQUENTLY clean dust from beneath the cut-off  
machine.  
WARNING:  
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals  
known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:  
• lead from lead-based paints,  
• crystalline silica from bricks and cement and other masonry products, and  
• arsenic and chromium from chemically-treated lumber.  
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to  
these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks  
that are specially designed to filter out microscopic particles.  
5
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SYMBOLS  
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpreta-  
tion of these symbols will allow you to operate the tool better and safer.  
SYMBOL  
NAME  
DESIGNATION/EXPLANATION  
V
Volts  
Voltage  
Current  
A
Hz  
W
Amperes  
Hertz  
Watt  
Frequency (cycles per second)  
Power  
min  
Minutes  
Time  
Alternating Current  
Type of current  
Direct Current  
Type or a characteristic of current  
Rotational speed, at no load  
n
No Load Speed  
o
Class II Construction  
Per Minute  
Double-insulated construction  
.../min  
Revolutions, strokes, surface speed, orbits etc., per minute  
Wet Conditions Alert  
Do not expose to rain or use in damp locations.  
To reduce the risk of injury, user must read and understand  
operator’s manual before using this product.  
Read The Operator’s Manual  
Always wear safety goggles, safety glasses with side shields, or  
a full face shield when operating this product.  
Eye Protection  
Safety Alert  
Precautions that involve your safety.  
Failure to keep your hands away from the wheel will result in  
serious personal injury.  
No Hands Symbol  
To reduce the risk of injury or damage, avoid contact with  
any hot surface.  
Hot Surface  
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SYMBOLS  
The following signal words and meanings are intended to explain the levels of risk associated with this product.  
SYMBOL  
SIGNAL  
MEANING  
DANGER:  
Indicates an imminently hazardous situation, which, if not avoided, will  
result in death or serious injury.  
WARNING:  
Indicates a potentially hazardous situation, which, if not avoided, could  
result in death or serious injury.  
CAUTION:  
CAUTION:  
Indicates a potentially hazardous situation, which, if not avoided, may  
result in minor or moderate injury.  
(Without Safety Alert Symbol) Indicates a situation that may result in  
property damage.  
SERVICE  
Servicing requires extreme care and knowledge and should  
be performed only by a qualified service technician. For  
service we suggest you return the product to your nearest  
AUTHORIZED SERVICE CENTER for repair. When servic-  
ing, use only identical replacement parts.  
WARNING:  
To avoid serious personal injury, do not attempt to use  
this product until you read thoroughly and understand  
completely the operator’s manual. Save this operator’s  
manual and review frequently for continuing safe opera-  
tion and instructing others who may use this product.  
WARNING:  
The operation of any power tool can result in foreign objects being thrown into your eyes, which can  
result in severe eye damage. Before beginning power tool operation, always wear safety goggles,  
safety glasses with side shields, or a full face shield when needed. We recommend Wide Vision Safety  
Mask for use over eye glasses or standard safety glasses with side shields. Always use eye protection  
which is marked to comply with ANSI Z87.1.  
SAVE THESE INSTRUCTIONS  
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ELECTRICAL  
EXTENSION CORDS  
SPEED AND WIRING  
Use only 3-wire extension cords that have 3-prong ground-  
ing plugs and 3-pole receptacles that accept the tool's plug.  
When using a power tool at a considerable distance from the  
power source, use an extension cord heavy enough to carry  
the current that the tool will draw. An undersized extension  
cord will cause a drop in line voltage, resulting in a loss of  
power and causing the motor to overheat. Use the chart  
provided below to determine the minimum wire size required  
in an extension cord. Only round jacketed cords listed by  
Underwriter's Laboratories (UL) should be used.  
The no-load speed of this tool is approximately 3,900  
rpm. This speed is not constant and decreases under  
a load or with lower voltage. For voltage, the wiring in a  
shop is as important as the motor’s horsepower rating. A  
line intended only for lights cannot properly carry a power  
tool motor. Wire that is heavy enough for a short distance  
will be too light for a greater distance. A line that can  
support one power tool may not be able to support two  
or three tools.  
GROUNDING INSTRUCTIONS  
**Ampere rating (on tool data plate)  
In the event of a malfunction or breakdown, grounding  
provides a path of least resistance for electric current to  
reduce the risk of electric shock. This tool is equipped with  
an electric cord having an equipment-grounding conduc-  
tor and a grounding plug. The plug must be plugged into a  
matching outlet that is properly installed and grounded in  
accordance with all local codes and ordinances.  
0-2.0  
2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0  
Cord Length  
Wire Size (A.W.G.)  
25'  
50'  
16  
16  
16  
16  
16  
16  
16  
16  
14  
16  
14  
12  
14  
14  
10  
14  
12  
100'  
Do not modify the plug provided. If it will not fit the outlet,  
have the proper outlet installed by a qualified electrician.  
Improper connection of the equipment-grounding conductor  
can result in a risk of electric shock. The conductor with  
insulation having an outer surface that is green with or with-  
out yellow stripes is the equipment-grounding conductor. If  
repair or replacement of the electric cord or plug is neces-  
sary, do not connect the equipment-grounding conductor  
to a live terminal.  
**Used on 12 gauge - 20 amp circuit.  
NOTE: AWG = American Wire Gauge  
When working with the tool outdoors, use an extension cord  
that is designed for outside use. This is indicated by the  
letters "WA" on the cord's jacket.  
Before using an extension cord, inspect it for loose or  
exposed wires and cut or worn insulation.  
Check with a qualified electrician or service personnel if the  
grounding instructions are not completely understood, or if  
in doubt as to whether the tool is properly grounded.  
WARNING:  
Keep the extension cord clear of the working area.  
Position the cord so that it will not get caught on lumber,  
tools or other obstructions while you are working with a  
power tool. Failure to do so can result in serious personal  
injury.  
Repair or replace a damaged or worn cord immediately.  
This tool is intended for use on a circuit that has an outlet  
like the one shown in figure 1. It also has a grounding pin  
like the one shown.  
WARNING:  
Check extension cords before each use. If damaged  
replace immediately. Never use tool with a damaged cord  
since touching the damaged area could cause electrical  
shock resulting in serious injury.  
ELECTRICAL CONNECTION  
This tool is powered by a precision built electric motor. It  
should be connected to a power supply that is 120 volts,  
60 Hz, AC only (normal household current). Do not operate  
this tool on direct current (DC). A substantial voltage drop  
will cause a loss of power and the motor will overheat. If  
the machine does not operate when plugged into an outlet,  
double check the power supply.  
GROUNDING PIN  
GROUNDED OUTLET  
Fig. 1  
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FEATURES  
PRODUCT SPECIFICATIONS  
nInput.............................. 120V, 60 Hz, AC Only,15 Amps nVise Clamp Angle ...........................Right (45˚), Left (45˚)  
nNo Load Speed..............................................3,900/min. nMaximum Cutting Capacities:  
nArbor Diameter ........................................................1 in.  
nWheel Diameter .....................................................14 in.  
nNet Weight........................................................37.6 lbs.  
nFence Angle....................................Right (45˚), Left (45˚)  
Round Pipe................................ 5 in. outside diameter  
Angle Stock ................... 6-1/2 in. wide x 3-5/16 in. tall  
Flat Metal Stock............................. 2-1/2 in. x 9-1/2 in.  
MACHINE  
ARM  
SWITCH  
TRIGGER  
SPINDLE  
LOCK BUTTON  
MOTOR  
LOWER  
WHEEL  
GUARD  
14 in.  
ABRASIVE  
WHEEL  
ADJUSTABLE  
FENCE  
WRENCH  
STORAGE  
VISE SCREW  
QUICK LOCK-  
RELEASE LEVER  
WRENCH  
MACHINE  
BASE  
VISE CRANK  
HANDLE  
VISE  
CLAMP  
TRANSPORT  
CHAIN  
Fig. 2  
KNOW YOUR CUT-OFF MACHINE  
SELF-RETRACTING LOWER WHEEL GUARD  
The lower wheel guard provides protection from each side  
of the wheel. It retracts over the upper wheel guard as the  
wheel is lowered into the workpiece.  
See Figures 2 - 3.  
Before attempting to use your machine, familiarize yourself  
with all operating features and safety requirements.  
MOTOR  
SPINDLE LOCK BUTTON  
This machine has a strong motor with sufficient power to  
handle tough cutting jobs. It also has externally accessible  
brushes for ease of servicing.  
A spindle lock button has been provided for locking the  
spindle which keeps the wheel in the machine from rotating.  
Depress and hold the spindle lock button while installing,  
changing, or removing wheel only.  
14 in. ABRASIVE WHEEL  
QUICK LOCK-RELEASE LEVER  
A 14 in. abrasive wheel is included with the cut-off machine.  
It will cut materials up to 5 in. thick or 8 in. wide, depending  
upon the thickness or width of the material and the setting  
at which the cut is being made.  
A quick lock-release lever has been provided on the cut-off  
machine. This feature allows you to open and close the vise  
clamp quickly without repetitive turning of the vise crank  
handle.  
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FEATURES  
VISE CLAMP  
LOCK-ON BUTTON  
See Figure 3.  
A vise clamp has been provided with the cut-off machine.  
It is located on the end of the vise screw and provides  
greater control by clamping the material to the fence. It also  
prevents the material from creeping toward the wheel during  
a cutting operation.  
The cut-off machine is equipped with a lock-on  
feature which is convenient when continuous cutting for  
extended periods of time is required. To engage the lock-on  
feature, depress switch trigger, push in and hold the lock-on  
button located on the side of the handle, then release switch  
trigger. Release lock-on button and machine will continue  
running.  
ADJUSTABLE FENCE  
The fence on the cut-off machine has been provided to sup-  
port the material and provide clamping support to the vise  
for holding the material securely when making all cuts. It  
is an adjustable fence that has been provided to make the  
cut-off machine more versatile. It adjusts from 0° to 45° to  
the right for making angled cuts. The hole pattern allows it  
to be moved forward when making cuts in tall or thick stock,  
such as square stock or tube stock. The hole pattern allows  
it to be moved back when making cuts in stock that is thin  
or wide, such as angle stock.  
To release lock-on feature, depress switch trigger and  
release.  
If you have the lock-on feature engaged during use and  
the machine becomes disconnected from power supply,  
disengage the lock-on feature immediately.  
TRIGGER LOCK  
See Figure 4.  
To prevent unauthorized use of the cut-off machine, we  
suggest that you disconnect it from the power supply and  
lock the switch in the off position. To lock the switch, install  
a padlock (not included) through the hole in the switch  
trigger. A lock with a shackle up to 1/4 in. diameter may be  
used. When the lock is installed and locked, the switch is  
inoperable. Store the padlock key in another location.  
CARRYING HANDLE  
For convenience when carrying or transporting the cut-  
off machine from one place to another, a carrying handle  
has been provided on top of the machine arm as shown in  
figure 3. To transport, turn off and unplug the machine, then  
lower machine arm and lock it in the down position. Use the  
transport chain to lock machine arm in the down position.  
MACHINE ARM  
SWITCH  
TRIGGER  
LOCK-ON  
BUTTON  
PADLOCK  
UPPER  
WHEEL GUARD  
TRIGGER  
LOCK  
CARRYING  
HANDLE  
LOWER  
WHEEL GUARD  
DEPTH  
STOP  
QUICK LOCK-  
RELEASE LEVER  
14 in.  
ABRASIVE  
WHEEL  
POWER  
CORD  
VISE CRANK  
HANDLE  
ADJUSTABLE  
FENCE  
FENCE  
BOLTS  
RUBBER FEET (3)  
VISE CLAMP  
Fig. 3  
10  
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LOOSE PARTS  
The following items are included with your tool:  
n Hex Wrench  
n Operator's Manual  
n Warranty Registration  
HEX WRENCH  
Fig. 4  
WARNING: The use of attachments or accessories not listed might be hazardous and could cause serious  
personal injury.  
ASSEMBLY  
UNPACKING  
This product has been shipped completely assembled.  
WARNING:  
n Carefully lift machine from the carton by the carrying  
handle and the machine base, and place it on a level  
work surface.  
Do not attempt to modify this tool or create accesso-  
ries not recommended for use with this tool. Any such  
alteration or modification is misuse and could result in a  
hazardous condition leading to possible serious personal  
injury.  
NOTE: This tool is heavy. To avoid back injury, lift with  
your legs, not your back, and get help when needed.  
n This machine has been shipped with the machine arm  
securedinthedownposition.Toreleasethemachinearm,  
push down on the top of the machine arm, and unhook  
the transport chain.  
WARNING:  
Do not connect to power supply until assembly is  
complete. Failure to comply could result in accidental  
starting and possible serious personal injury.  
n Inspect the tool carefully to make sure no breakage or  
damage occurred during shipping.  
n Do not discard the packing material until you have care-  
fully inspected and satisfactorily operated the tool.  
WARNING:  
n The machine is factory set for accurate cutting. After  
assembling it, check for accuracy. If shipping has influ-  
encedthesettings,refertospecificproceduresexplained  
in this manual.  
A 14 in. wheel is the maximum wheel capacity of your  
cut-off machine. Never use a wheel that is too thick to  
allow outer flange to engage with the flats on the spindle.  
Larger wheels will come in contact with the wheel guards,  
while thicker wheels will prevent the bolt from secur-  
ing the wheel on the spindle. Either of these situations  
could result in a serious accident and can cause serious  
personal injury.  
n If any parts are damaged or missing, please call  
1-800-525-2579 for assistance.  
WARNING:  
If any parts are missing do not operate this tool until the  
missing parts are replaced. Failure to do so could result  
in possible serious personal injury.  
11  
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ASSEMBLY  
REMOVAL / INSTALLATION OF WHEEL  
TO REMOVE  
See Figure 5.  
INNER  
WASHER  
WHEEL  
ARBOR  
n Unplug the cut-off machine.  
n Push down on machine arm and remove transport chain  
from hook on motor housing to release machine arm.  
n Raise machine arm to its full raised position. Be cautious  
INNER  
FLANGE  
14 in.  
ABRASIVE  
WHEEL  
when raising, machine arm is spring loaded.  
n Rotate lower wheel guard upward, exposing the hex head  
bolt that secures abrasive wheel to wheel arbor.  
n Depress the spindle lock button and rotate bolt until  
spindle locks, preventing shaft from rotating.  
OUTER  
WASHER  
n Using the hex wrench provided, loosen and remove  
bolt.  
NOTE: Bolt has right hand threads. Turn bolt counter-  
clockwise to loosen.  
n Remove outer washer, outer flange, spacer, and wheel.  
Do not remove inner flange or inner washer. Removal of  
these two parts are not required for wheel changes.  
HEX HEAD  
BOLT  
SPACER  
OUTER  
FLANGE  
WARNING:  
Fig. 5  
If inner flange or inner washer has been removed, replace  
both before placing wheel on spacer and wheel arbor.  
Failure to do so could cause an accident since wheel will  
not tighten properly.  
WARNING:  
Do not overtighten hex head bolt. Overtightening can  
cause the new wheel to crack, resulting in premature  
failure and possible serious personal injury.  
TO INSTALL  
See Figure 5.  
n Unplug the cut-off machine.  
MOUNT TO A METAL WORK SURFACE  
n Inspect the replacement wheel for defects such as cracks,  
chipping, and correct speed rating. If defects are found  
or the speed rating is not greater than 3,900 rpm, do not  
use. Select another wheel.  
Three predrilled holes are provided in the machine’s base for  
mounting to a metal work surface. Use proper length, 3/8 in.  
diameter bolts, nuts, and washers for mounting (hardware  
not included).  
n Clean debris from the inner washer and inner flange.  
n Place new wheel over spacer, then place both on wheel  
arbor against inner flange.  
n Clean outer flange, then align flats with flats on wheel  
arbor and slide it onto arbor until it is flush against  
wheel.  
n Place the recessed side of the outer washer against the  
arbor, then insert the hex head bolt into the threaded end  
of the wheel arbor.  
n Start threads and turn bolt clockwise to snugly tighten.  
n Depress the spindle lock button and rotate bolt until  
spindle locks, preventing shaft from rotating.  
n Using the hex wrench provided, securely tighten hex head  
bolt.  
NOTE: Bolt has right hand threads. Turn bolt clockwise  
to tighten.  
12  
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ASSEMBLY  
ADJUSTABLE FENCE  
See Figure 6.  
The adjustable fence is located at the rear of the cut-off  
machine. As mentioned previously, it is used along with the  
vise clamp to provide a clamp for holding the workpiece  
securely when making cuts. It also makes the cut-off  
machine more versatile.  
SCALE  
INDICATOR  
VISE  
CLAMP  
The fence can be rotated to obtain cutting angles from 0°  
to 45°. It also can be moved back to allow greater cutting  
widths in thin stock, or forward to allow greater cutting  
depths in tall or thick stock.  
CUTTING ANGLE ADJUSTMENT  
See Figures 6 - 7.  
n Unplug the cut-off machine.  
FENCE  
SCALE  
n Using the hex wrench supplied, loosen the two hex head  
bolts securing adjustable fence. See Figure 7.  
ADJUSTABLE  
FENCE  
n Rotate fence until the desired angle of cut on the scale  
Fig. 6  
is aligned with the indicator in machine base.  
n For precise cuts, check the angle of cut for the fence  
against the abrasive wheel with a protractor, bevel square,  
or other similar device.  
n Using the hex wrench supplied, securely tighten hex head  
ADJUSTABLE  
FENCE  
bolts. Return hex wrench to its storage area in base.  
n This will secure the fence in place at desired angle.  
See Figure 6.  
ADJUSTING WIDTH OF CUT  
See Figures 7 - 8.  
n Unplug the cut-off machine.  
n To increase the width of cut of the cut-off machine, use  
the hex wrench to loosen and remove the hex head bolts  
and washers securing fence to machine base.  
n Reposition the curved slot of the fence with the threaded  
THREADED  
HOLE  
HEX HEAD  
BOLTS  
hole in back of the machine base.  
Fig. 7  
n Install a hex head bolt through a lock washer and flat  
washer into machine base. Do not tighten bolt securely.  
n Align remaining fence bolt hole with the middle threaded  
hole in the machine base.  
n Install hex head bolt through lock washer and flat washer  
into machine base.  
n Check and adjust fence to desired cutting angle.  
ADJUSTABLE  
FENCE  
n Using the hex wrench supplied, securely tighten hex head  
bolts. Return hex wrench to its storage area in base.  
n This position is good for cutting thin and wide pieces of  
stock, such as flat or angled stock.  
n To increase the height of cut of the cut-off machine, follow  
the above procedure except place the rear hex head bolt  
in the middle threaded hole and the front hex head bolt  
in the front threaded hole.  
HEX HEAD  
BOLTS  
n Check and adjust fence to desired cutting angle.  
Fig. 8  
13  
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ASSEMBLY  
n Using the hex wrench supplied, securely tighten hex head  
bolts. Return hex wrench to its storage area in base.  
n This position is good for cutting tall and thick pieces of  
stock, such as square or tube stock.  
VISE CRANK  
HANDLE  
QUICK LOCK-RELEASE LEVER  
See Figures 9 - 10.  
The quick lock-release lever engages the vise clamp to be  
used along with the fence to provide a vise for securing the  
workpiece to be cut. It also allows you to open and close  
the vise quickly without repetitive turning of the vise crank  
handle.  
USING THE QUICK LOCK-RELEASE LEVER  
AND VISE CLAMP  
To loosen:  
VISE  
CLAMP  
See Figure 9.  
QUICK LOCK-RELEASE LEVER  
WITH THREADS NOT ENGAGED  
n Unplug the cut-off machine.  
Fig. 9  
n Release tension on the vise clamp by rotating the vise  
crank handle 1/2 to 1 turn counterclockwise.  
n Lift up the quick lock-release lever as shown in fig-  
ure 9 and pull back on vise crank handle to slide open  
the vise.  
QUICK LOCK-  
RELEASE LEVER  
WITH THREADS  
ENGAGED  
To tighten:  
See Figure 10.  
VISE  
n Unplug the cut-off machine.  
n Push the vise crank handle forward to slide the vise clamp  
against the workpiece.  
CRANK  
HANDLE  
n Rotate the quick lock-release lever forward and push  
down as shown in figure 10 to engage its threads with  
the vise screw.  
n Rotate the vise crank handle clockwise to tighten the vise  
clamp against the workpiece.  
DEPTH STOP  
VISE  
CLAMP  
VISE  
SCREW  
See Figure 11.  
The depth stop limits the wheel's downward travel. It allows  
the wheel to go below the machine base enough to maintain  
full cutting capacities.  
Fig. 10  
The adjustable depth stop is a bolt threaded into the base  
at the rear of the machine. To adjust the depth stop, use the  
hex wrench supplied to raise or lower the depth stop bolt.  
DEPTH STOP ADJUSTMENTS  
See Figure 11.  
The depth stop is factory set to provide maximum cutting  
capacity for the 14 in. abrasive wheel provided with the  
cut-off machine.  
n Unplug the cut-off machine.  
n Loosen depth stop bolt that is against the machine  
base.  
When the diameter of the wheel has been reduced due to  
wear, it may be necessary to adjust the depth stop to provide  
maximum cutting capacity. When a new abrasive wheel is  
installed, it is necessary to check the clearance of the wheel  
to the machine base support.  
n The depth stop is lowered by turning depth stop bolt  
clock-wise and raised by turning bolt counterclockwise.  
n By pressing down on the machine arm, lower the wheel  
and check clearance and maximum cutting distance  
(distance from adjustable stationary vise where wheel  
enters) to front of machine base slot.  
n Adjust if necessary.  
14  
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ASSEMBLY  
DEPTH STOP  
BOLT  
CAUTION:  
Do not start the abrasive cut-off machine without check-  
ing for interference between the wheel and the machine  
base support. Damage may result to the wheel if it  
strikes the machine base support during operation of the  
machine.  
n Tighten the depth stop bolt with the hex wrench  
provided.  
WARNING:  
Cutting steel will cause sparks. Do not operate in  
the presence of combustible or flammable materials.  
Failure to heed this warning could result in a fire or  
serious personal injury.  
TO LOWER  
DEPTH STOP  
BOLT  
TO RAISE  
Fig. 11  
OPERATION  
WARNING:  
WARNING:  
Do not attempt to cut wood or masonry with this cut-off  
machine. Never cut magnesium or magnesium alloy with  
this machine. Failure to comply could result in serious  
personal injury.  
Do not allow familiarity with tools to make you care-  
less. Remember that a careless fraction of a second is  
sufficient to inflict serious injury.  
WARNING:  
WARNING:  
Always wear safety goggles or safety glasses with side  
shields when operating power tools. Failure to do so  
could result in objects being thrown into your eyes  
resulting in possible serious injury.  
Never install any wood cutting blade on this machine.  
The cut-off machine is properly guarded only for cutting  
metal with an abrasive wheel. Failure to comply could  
result in serious personal injury.  
APPLICATIONS  
WARNING:  
You may use this tool for the purposes listed below:  
Do not use any attachments or accessories not  
recommended by the manufacturer of this tool. The use  
of attachments or accessories not recommended can  
result in serious personal injury.  
n Cutting most types of metals such as 2 in. x 6 in. steel  
framing studs.  
n Cutting hard metal iron stock such as square bar stock  
and angle iron.  
n Cutting metal tube and pipe stock.  
15  
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OPERATION  
POWER SUPPLY  
MACHINE  
ARM  
Before operating the cut-off machine, check the power  
supply and make sure it meets the requirements listed on  
the tool’s data plate. A substantial voltage drop will cause a  
loss of power and machine overheating.  
SWITCH  
TRIGGER  
LOCK-ON  
BUTTON  
Common causes of power loss and machine overheating are  
insufficient extension cord size and multiple tools operating  
from the same power source.  
SWITCH TRIGGER  
To turn the cut-off machine ON, depress the switch trigger  
located in the handle portion of the machine arm.  
MATERIAL  
TO BE CUT  
To turn it OFF, release the switch trigger.  
LOCK-ON BUTTON  
To engage the lock-on feature, depress the switch trigger,  
push in and hold the lock-on button located on the side  
of the handle, then release switch trigger. Release lock-on  
button and the machine will continue running.  
MACHINE  
BASE  
Fig. 12  
ADJUSTABLE  
FENCE  
To release the lock-on feature, depress the switch trigger  
and release.  
If you have the lock-on feature engaged during use and the  
machine becomes disconnected from power supply, or in  
the event of a power failure, disengage the lock-on feature  
immediately.  
VISE  
CLAMP  
CUTTING WITH THE CUT-OFF MACHINE  
See Figures 12 - 13.  
WARNING:  
Do not attempt to cut wood or masonry with this cut-off  
machine. Never cut magnesium or magnesium alloy with  
this machine. Failure to comply could result in serious  
personal injury.  
MATERIAL  
TO BE CUT  
n To prevent machine movement or tipping during cutting  
procedure, secure cut-off machine in place to a work-  
bench or work surface that is also secure.  
Fig. 13  
WARNING:  
WARNING:  
Large, circular, or irregularly shaped material may require  
additional means of clamping to be secured in place  
adequately for cutting. Also use blocks to hold material  
securely. Failure to comply could result in serious personal  
injury.  
Always use the vise on the cut-off machine to prevent  
accidents that could result in possible serious personal  
injury.  
WARNING:  
WARNING:  
Never stand or have any part of your body in line with  
the path of the wheel. Doing so may cause an accident  
resulting in possible serious personal injury.  
To avoid accidental start up of the cut-off machine,  
always make sure switch is off and “lock-on” feature is  
disengaged before connecting to power source. Failure  
to heed this warning could result in serious personal  
injury.  
16  
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OPERATION  
CUT-OFF  
See Figures 14 - 15.  
MACHINE  
ARM  
SWITCH  
TRIGGER  
A cut-off is made by cutting across the width of the  
workpiece. A straight crosscut is made with the adjustable  
fence set at the zero degree position. Angled cut-offs are  
made with the adjustable fence set at some angle other  
than zero.  
ADJUSTABLE  
FENCE  
To cut with the cut-off machine:  
n Firmly secure the material to be cut using the machine’s  
MATERIAL  
TO BE CUT  
vise (adjustable fence and vise clamp).  
n Using the hex wrench supplied, loosen the hex head bolts  
VISE CRANK  
HANDLE  
securing the fence. See Figures 14 and 15.  
n Rotate the adjustable fence to the angle needed.  
n Retighten hex head bolts securing fence.  
n Return hex wrench to its storage area in base.  
MACHINE  
BASE  
Fig. 14  
WARNING:  
To avoid serious personal injury, always tighten hex  
head bolts securely before making a cut. Failure to do  
so could result in movement of the workpiece while mak-  
ing a cut.  
ADJUSTABLE  
FENCE  
VISE  
CLAMP  
n Place the workpiece flat on the machine base with one  
surface securely against the adjustable fence.  
n Align cutting line on the workpiece with the edge of the  
abrasive wheel.  
n Push in the vise crank handle to set the vise clamp  
against the workpiece. Turn the vise crank handle  
1/2 to 1 turn clockwise to securely clamp the workpiece  
to the fence.  
WARNING:  
MATERIAL  
TO BE CUT  
To avoid serious personal injury, keep your hands at least  
3 in. from wheel.  
Fig. 15  
the wheel to build up to full speed before letting it come  
into contact with the material to be cut.  
n When cutting long pieces, support the opposite end of  
the material with a roller stand or with a work surface  
level with the machine base.  
n Once it reaches full speed slowly lower the handle of the  
machine arm until the cut-off wheel comes in contact with  
the material being cut. Continue to use steady and even  
pressure to obtain a uniform cut through the workpiece.  
Never force the wheel into the material being cut.  
WARNING:  
Never perform any cutting operation freehand (without  
placing workpiece in the vise). Material will get hot during  
cutting operation. Keep hands off of metal being cut to  
avoid serious personal injury.  
n When the cut is complete, release the switch trigger and  
allow the wheel to stop rotating before raising the wheel  
out of workpiece.  
n Before turning on machine, perform a dry run of the cut-  
ting operation just to make sure that no problems will  
occur when the cut is made.  
WARNING:  
Do not touch the cut material until it cools or you can be  
burned. Failure to heed this warning could result in seri-  
ous personal injury.  
n Start the machine by grasping the handle and fully  
squeezing the switch trigger. Allow several seconds for  
17  
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MAINTENANCE  
BRUSH REPLACEMENT  
See Figure 16.  
WARNING:  
Your cut-off machine has externally accessible brush as-  
semblies that should be periodically checked for wear.  
When servicing, use only identical Ryobi replacement  
parts. Use of any other parts may create a hazard or  
cause product damage.  
Proceed as follows when replacement is required:  
n Unplug the cut-off machine.  
WARNING:  
WARNING:  
Always wear safety goggles or safety glasses with side  
shields during power tool operation or when blowing dust.  
If operation is dusty, also wear a dust mask.  
Failure to unplug cut-off machine could result in accidental  
starting causing possible serious personal injury.  
n Remove brush cap with a screwdriver. Brush assembly is  
spring loaded and will pop out when you remove brush  
cap.  
GENERAL MAINTENANCE  
Avoid using solvents when cleaning plastic parts. Most  
plastics are susceptible to damage from various types of  
commercial solvents and may be damaged by their use. Use  
clean cloths to remove dirt, dust, oil, grease, etc.  
n Remove brush assembly.  
n Check for wear. Replace both brushes when either has  
less than 1/4 in. length of carbon remaining. Do not  
replace one side without replacing the other.  
WARNING:  
n Reassemble using new brush assemblies. Make sure  
curvature of brush matches curvature of motor and that  
brush moves freely in brush tube.  
Do not at any time let brake fluids, gasoline, petroleum-  
based products, penetrating oils, etc., come in contact  
with plastic parts. Chemicals can damage, weaken or  
destroy plastic which may result in serious personal  
injury.  
n Make sure brush cap is oriented correctly (straight) and  
replace.  
n Tighten brush cap securely. Do not overtighten.  
Electric tools used on fiberglass material, wallboard,  
spackling compounds, or plaster are subject to accelerated  
wear and possible premature failure because the fiberglass  
chips and grindings are highly abrasive to bearings, brushes,  
commutators, etc. Consequently, we do not recommended  
using this tool for extended work on these types of materi-  
als. However, if you do work with any of these materials, it is  
extremely important to clean the tool using compressed  
air.  
BRUSH CAP  
BRUSH  
ASSEMBLY  
LUBRICATION  
BRUSH  
ASSEMBLY  
All of the bearings in this tool are lubricated with a sufficient  
amount of high grade lubricant for the life of the unit under  
normal operating conditions. Therefore, no further lubrica-  
tion is required.  
WARNING:  
To ensure safety and reliability, all repairs (with the  
exception of the externally accessible brushes) should be  
performed by a Ryobi Authorized Service Center.  
BRUSH  
CAP  
Fig. 16  
18  
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TROUBLESHOOTING  
PROBLEM  
CAUSE  
SOLUTION  
Machine does not start  
1. Power cord not plugged in.  
2. Power cord is damaged.  
1. Plug in cord.  
2. Have the cord replaced at your  
nearest authorized service center.  
3. Reset circuit breaker.  
3. Circuit breaker is tripped.  
4. Circuit fuse is blown  
4. Replace circuit fuse.  
5. Switch is damaged or burned out.  
5. Have the switch replaced at your  
nearest authorized service center  
and request a voltage check from  
the power company.  
Motor does not reach full speed or  
power.  
1. Voltage from power source is low.  
2. Circuit is overloaded.  
1. Request a voltage check from the  
power company.  
2. Test on a different circuit or without  
anything else on circuit.  
3. Motor burned out.  
3. Have tool serviced; request voltage  
check from the power company.  
4. Have an electrician replace with a  
15 amp fuse or circuit breaker.  
5. Use a shorter extension cord.  
6. Have the switch replaced at your  
nearest authorized service center.  
4. Fuses or circuit breakers are  
wrong size.  
5. Extension cord is too long.  
6. Switch is defective.  
Motor stalls, blows fuses, or trips  
circuit breakers.  
1. Switch is defective.  
1. Have the switch replaced at your  
nearest authorized service center.  
2. Request a voltage check from the  
power company.  
2. Voltage from source is low.  
3. Fuses or circuit breakers are  
wrong size or defective.  
3. Have an electrician replace with a  
15 amp fuse or circuit breaker.  
Motor overheats.  
1. Motor is overloaded.  
1. Request a voltage check from the  
power company.  
2. Wheel is being fed into work too fast. 2. Feed wheel into work slower.  
Machine is noisy when running.  
Wheel hits table.  
1. Motor needs attention.  
1. Have the motor checked at your  
nearest authorized service center.  
1. Wheel not properly installed.  
2. Depth stop setting incorrect.  
1. See “Removal and Installation of  
Wheel” section.  
2. Adjust the depth stop. See “Depth  
Stop” section.  
Wheel does not cut through  
workpiece.  
1. Depth stop setting incorrect.  
2. Wheel worn too much.  
1. Adjust the depth stop. See “Depth  
Stop” section.  
2. Replace with a new 14 in. abrasive  
cut off wheel.  
3. Incorrect cutting operation.  
3. See “Cut-Off” section.  
Machine vibrates or shakes  
excessively.  
1. Wheel is out-of-round.  
2. Wheel is chipped  
1. Replace wheel.  
2. Replace wheel.  
3. Wheel is loose.  
4. Machine is not secure.  
5. Work surface is uneven.  
3. Tighten wheel bolt on arbor.  
4. Check and tighten all hardware.  
5. Relocate and secure on a flat  
surface.  
19  
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OPERATOR’S MANUAL  
14 in. Abrasive Cut-Off Machine  
C358  
• SERVICE  
Now that you have purchased your tool, should a need ever exist for repair parts or  
service, simply contact your nearest Ryobi Authorized Service Center. Be sure to provide  
all pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest Ryobi  
complete list of Authorized Service Centers.  
• MODEL NO. AND SERIAL NO.  
The model number of this tool will be found on a plate attached to the motor housing.  
Please record the model number and serial number in the space provided below.  
• HOW TO ORDER REPAIR PARTS  
When ordering repair parts, always give the following information:  
C358  
• MODEL NUMBER  
• SERIAL NUMBER  
RYOBI TECHNOLOGIES, INC.  
1428 Pearman Dairy Road, Anderson, SC 29625  
Post Office Box 1207, Anderson, SC 29622-1207  
Phone 1-800-525-2579  
983000-607  
10-04  
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