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.
3
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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.
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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
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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.
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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
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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.
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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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