Ryobi C358 User Manual
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
TABLE OF CONTENTS
n Introduction ..................................................................................................................................................................... 2
�n General Safety Rules.................................................................................................................................................... 3-4
�n Specific Safety Rules....................................................................................................................................................4-5
�n Symbols........................................................................................................................................................................ 6-7
��n Electrical.......................................................................................................................................................................... 8
��n Features...................................................................................................................................................................... 9-10
��n Loose Parts ................................................................................................................................................................... 11
��n Assembly.................................................................................................................................................................. 11-15
�n Operation.................................................................................................................................................................. 15-17
�n Maintenance.................................................................................................................................................................. 18
n Troubleshooting ............................................................................................................................................................. 19
�n Parts Ordering / Service ................................................................................................................................................ 20
INTRODUCTION
This tool has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability have
been given top priority in the design of this product making it easy to maintain and operate.
IMPORTANT INFORMATION ON THE USE OF CUT-OFF WHEELS AND ANSI B7.1 can be obtained by writing to:
GRINDING WHEEL INSTITUTE
30200 Detroit Road
Cleveland, OH 44145-1967
2
GENERAL SAFETY RULES
WARNING:
Read and understand all instructions. Failure to follow
all instructions listed below, may result in electric shock,
fire and/or serious personal injury.
READ ALL INSTRUCTIONS
n KNOW YOUR POWER TOOL. Read the operator's
manual carefully. Le a r n the cut- o ff ma c h i ne's
applications and limitations as well as the specific
potential hazards related to this tool.
n GUA R D A G AI N ST EL E CT R IC AL S H OC K BY
PREVENTING BODY CONTACT WITH GROUNDED
SURFACES. For example: pipes, radiators, ranges,
refrigerator enclosures.
n KEEP 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.
n REMOVE ADJUSTING KEYS AND WRENCHES.
Form habit of checking to see that keys and adjusting
wrenches are removed from tool before turning it on.
n KEEP WORK AREA CLEAN. Cluttered areas and
benches invite accidents. DO NOT leave tools or
material on the machine while it is in operation.
n AVOID DANGEROUS ENVIRONMENT. Don't use
power tools in damp or wet locations or expose to
rain. Keep work area well lit.
n KEEP 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.
n MAKE WORKSHOP CHILDPROOF with padlocks or
master switches, or by removing starter keys.
n DON'T FORCE TOOL. It will do the job better and
safer at the feed rate for which it was designed.
n USE 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.
n MAKE 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.
n DRESS PROPERLY. Do not wear loose clothing, gloves,
neckties, or jewelry. They can get caught and draw you
into moving parts. Rubber gloves and nonskid footwear
are recommended when working outdoors. Also wear
protective hair covering to contain long hair.
n ALWAYS WEAR SAFETY GLASSES WITH SIDE
SHIELDS. Everyday eyeglasses have only impact-
resistant lenses; they are NOT safety glasses.
n SECURE 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.
n DON'T OVERREACH. Keep proper footing and balance
at all times.
n MAI N TAIN TO O L S WI T H CA R E. Kee p too l s
sharp and clean for better and safer performance.
Follow instructions for lubricating and changing
accessories.
n DISCONNECT TOOLS. When not in use, before
servicing, or when changing attachments, wheels,
bits, cutters, etc., all tools should be disconnected.
n AVOID ACCIDENTAL STARTING. Be sure switch is
off when plugging in.
n USE RECOMMENDED ACCESSORIES. The use of
improper accessories may cause risk of injury.
n NEVER STAND ON TOOL. Serious injury could occur if
the tool is tipped or if the cutting wheel is unintentionally
contacted.
n CHECK 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.
n NEVER LEAVE TOOL RUNNING UNATTENDED.
TURN POWER OFF. Don't leave tool until it comes to
a complete stop.
n PROTECT YOUR LUNGS. Wear a face or dust mask
if the cutting operation is dusty.
n PROTECT YOUR HEARING. Wear hearing protection
during extended periods of operation.
n DON'T ABUSE CORD. Never yank cord to disconnect
from receptacle. Keep cord from heat, oil, and sharp
edges.
n USE 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.
n WHEELS COAST AFTER TURN OFF.
3
GENERAL SAFETY RULES
n NEVER USE IN AN EXPLOSIVE ATMOSPHERE.
Normal sparking of the motor could ignite fumes.
n INSPECT TOOL CORDS PERIODICALLY. If damaged,
have repaired by a qualified service technician at an
authorized service facility. The conductor with insulation
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.
SPECIFIC SAFETY RULES
n USE ONLY CORRECT WHEELS. Do not use wheels with
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.
n DO NOT REMOVE THE MACHINE'S WHEEL GUARDS.
Never operate the machine with any guard or cover
removed. Make sure all guards are operating properly
before each use.
n KEEP 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.
n ALWAYS SUPPORT LONG MATERIAL. To minimize risk
of tipping machine, always support long material.
n BEFORE MAKING A CUT, BE SURE ALL ADJUST-
MENTS ARE SECURE.
n ALWAYS USE THE VISE CLAMP to secure the
material.
n NEVER TOUCH WHEEL or other moving parts during
use.
n NEVER START THE CUT-OFF MACHINE WHEN THE
WHEEL IS IN CONTACT WITH THE MATERIAL.
n NEVER 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.
n NEVER PERFORM ANY OPERATION "FREEHAND".
Always secure the material to be cut in the vise.
n NEVER hand hold a piece of material. Material will
become very hot while being cut.
n NEVER reach behind, under, or within three inches of the
wheel and its cutting path with your hands and fingers
for any reason.
n NEVER 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.
n INSPECT EXTENSION CORDS PERIODICALLY and
replace if damaged.
n KEEP TOOL DRY, CLEAN, AND FREE FROM OIL AND
GREASE. Always use a clean cloth when cleaning.
Never use brake fluids, gasoline, petroleum-based
products, or any solvents to clean tool.
n STAY ALERT AND EXERCISE CONTROL. Watch what
you are doing and use common sense. Do not operate
tool when you are tired. Do not rush.
n DO NOT USE TOOL IF SWITCH DOES NOT TURN
IT ON AND OFF. Have defective switches replaced by
an authorized service center.
n AVOID AWKWARD O PERATIONS A N D HAND
POSITIONS where a sudden slip could cause your hand
to move into the wheel. ALWAYS make sure you have
good balance.
n NEVER stand or have any part of your body in line with
the path of the wheel.
n ALWAYS release the power switch and allow the wheel
to stop rotating before raising wheel guard or removing
material.
n DO NOT TURN THE MOTOR SWITCH ON AND OFF
RAPIDLY. This could cause the wheel to loosen and could
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.
n WHEN SERVICING USE ONLY IDENTICAL RIDGID
REPLACEMENT PARTS. Use of any other parts may
create a hazard or cause product damage.
n NEVER leave the cut-off machine unattended while
connected to a power source.
n IF ANY PART OF THIS CUT-OFF MACHINE IS MISSING
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.
n MAKE 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.
n CHECK THE WHEEL FOR FISSURES AND CRACKS,
and test for normal operation prior to use.
n ONLY 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.
4
SPECIFIC SAFETY RULES
n ALWAYS EASE THE ABRASIVE WHEEL AGAINST
THE MATERIAL when starting to cut. A harsh impact
can break the wheel.
n BEFORE CUTTING press the trigger switch and allow
the cut-off wheel to reach full speed.
n MAKE SURE THE WORK AREA HAS AMPLE LIGHTING
to see the work and that no obstructions will interfere with
safe operation BEFORE performing any work using your
cut-off machine.
n USE ONLY FLANGES furnished with this cut-off
machine.
n DO NOT OVERTIGHTEN THE WHEEL NUT. Excessive
tightening can cause the whee to crack during
operation.
n FREQUENTLY clean dust from beneath the cut-off
machine.
n RISK OF FIRE OR EXPLOSION. This product has parts
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.
n DO NOT OPERATE THIS TOOL WHILE UNDER
THE INFLUENCE OF DRUGS, ALCOHOL, OR ANY
MEDICATION.
n ALWAYS 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.
n REPLACE A CRACKED WHEEL IMMEDIATELY.
n SAVE THESE INSTRUCTIONS. Refer to them frequently
and use them to instruct other users. If you loan someone
this tool, loan them these instructions also.
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
SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOL NAME DESIGNATION/EXPLANATION
V Volts
A Amperes
Hz Hertz
W Watt
min Minutes
Alternating Current
Direct Current
n
o
.../min
No Load Speed
Class II Construction
Per Minute
Wet Conditions Alert
Voltage
Current
Frequency (cycles per second)
Power
Time
Type of current
Type or a characteristic of current
Rotational speed, at no load
Double-insulated construction
Revolutions, strokes, surface speed, orbits etc., per minute
Do not expose to rain or use in damp locations.
Read The Operator’s Manual
Eye Protection
Safety Alert
No Hands Symbol
Hot Surface
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Always wear safety goggles, safety glasses with side shields, or
a full face shield when operating this product.
Precautions that involve your safety.
Failure to keep your hands away from the wheel will result in
serious personal injury.
To reduce the risk of injury or damage, avoid contact with
any hot surface.
6
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