Ryobi C357 Operator`s manual

a
OPERATOR'S MANUAL
14 in. (356 mm) Abrasive Cut-Off
Machine – Model C357
a
0
1
5
THANK YOU FOR BUYING A RYOBI ABRASIVE CUT-OFF MACHINE.
Your new cut-off machine has been engineered and manufactured to Ryobi's high standards for dependability, ease of
operation, and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
CAUTION: Carefully read through this entire operator's manual before using your new machine.
Pay close attention to the Rules for Safe Operation, Warnings, and Cautions. If you use your machine properly and only for
what it is intended, you will enjoy years of safe, reliable service.
Please fill out and return the Warranty Registration Card so we can be of future service to you.
Thank you again for buying Ryobi tools.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
■ Table of Contents ........................................................................................................................................ 2
■ Rules for Safe Operation ......................................................................................................................... 3-6
■ Electrical ...................................................................................................................................................... 6
• Extension Cords ....................................................................................................................................................... 6
• Electrical Connection ............................................................................................................................................... 6
• Grounding Instructions ............................................................................................................................................. 6
■ Unpacking and Loose Parts ........................................................................................................................ 7
• Loose Parts List ....................................................................................................................................................... 7
■ Product Specifications ................................................................................................................................ 7
■ Features ................................................................................................................................................... 8-9
• Know Your Abrasive Cut-Off Machine ...................................................................................................................... 8
• Motor ........................................................................................................................................................................ 8
• 14 in. (356 mm) Abrasive Wheel .............................................................................................................................. 8
• Self-Retracting Lower Wheel Guard ........................................................................................................................ 8
• Vise Clamp ............................................................................................................................................................... 8
• Adjustable Fence ..................................................................................................................................................... 8
• Quick Lock-Release Lever ....................................................................................................................................... 8
• Carrying Handle ....................................................................................................................................................... 9
• Lock-On Button ........................................................................................................................................................ 9
• Spindle Lock Button ................................................................................................................................................. 9
• Trigger Lock ............................................................................................................................................................. 9
■ Adjustments ......................................................................................................................................... 10-13
• Removal and Installation of Wheel ........................................................................................................................ 10
• To Remove ............................................................................................................................................................. 10
• To Install ................................................................................................................................................................. 10
• Adjustable Fence ....................................................................................................................................................11
• Cutting Angle Adjustment ....................................................................................................................................... 11
• Adjusting Width of Cut ........................................................................................................................................... 11
• Quick Lock-Release Lever ..................................................................................................................................... 12
• Using The Quick Lock-Release Lever and Vise Clamp ......................................................................................... 12
a. To loosen ........................................................................................................................................................... 12
b. To tighten ........................................................................................................................................................... 12
• Depth Stop ............................................................................................................................................................. 13
• Depth Stop Adjustments ........................................................................................................................................ 13
■ Operation ............................................................................................................................................. 13-15
• Applications ............................................................................................................................................................ 13
• Power Supply ......................................................................................................................................................... 14
• Switch ..................................................................................................................................................................... 14
• Lock-On Button ...................................................................................................................................................... 14
• Cutting With Your Cut-Off Machine ........................................................................................................................ 14
• Cut-Off .................................................................................................................................................................... 15
a. To cut with your cut-off machine ....................................................................................................................... 15
■ Maintenance ......................................................................................................................................... 16-17
• General................................................................................................................................................................... 16
• Lubrication .............................................................................................................................................................. 16
• Extension Cords ..................................................................................................................................................... 16
• Brush Replacement ................................................................................................................................................ 17
a. Proceed as follows when replacement is required ........................................................................................... 17
■ Troubleshooting ................................................................................................................................... 17-18
■ Parts Ordering / Service ............................................................................................................................ 20
Page 2
RULES FOR SAFE OPERATION
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the
explanations with them, deserve your careful attention and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper
accident prevention measures.
SYMBOL
MEANING
SAFETY ALERT SYMBOL:
Indicates danger, warning, or caution. May be used in conjunction with other symbols or pictographs.
DANGER: Failure to obey a safety warning will result in serious injury to yourself or to others. Always
follow the safety precautions to reduce the risk of fire, electric shock and personal injury.
WARNING: Failure to obey a safety warning can result in serious injury to yourself or to others. Always
follow the safety precautions to reduce the risk of fire, electric shock and personal injury.
CAUTION: Failure to obey a safety warning may result in property damage or personal injury to
yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and
personal injury.
NOTE:
Advises you of information or instructions vital to the operation or maintenance of the equipment.
IMPORTANT
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the tool to your nearest RYOBI
AUTHORIZED SERVICE CENTER for repair. When servicing, use only identical Ryobi replacement parts.
WARNING:
Do not attempt to operate this tool until you have read
thoroughly and understand completely all instructions,
safety rules, etc. contained in this manual. Failure to
comply can result in accidents involving fire, electric
shock, or serious personal injury. Save this operator's
manual and review frequently for continuing safe
operation and instructing others who may use this tool.
WARNING:
WEAR YOUR
SAFETY
GLASSES
FORESIGHT IS BETTER
THAN NO SIGHT
The operation of any abrasive cut-off machine 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 or safety glasses with side shields and a full face shield when needed. We
recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses with
side shields.
Look for this symbol to point out important safety precautions.
It means attention!!! Your safety is involved.
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
Page 3
RULES FOR SAFE OPERATION
Safe operation of this power tool requires that you read and
understand this operator's manual and all labels affixed to
the tool. Safety is a combination of common sense, staying
alert, and knowing how your cut-off machine works.
READ ALL INSTRUCTIONS
■ KNOW 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.
■ GUARD AGAINST ELECTRICAL SHOCK BY
PREVENTING BODY CONTACT WITH GROUNDED
SURFACES. For example: pipes, radiators, ranges,
refrigerator enclosures.
■ KEEP GUARDS IN PLACE and in good working order.
■ REMOVE ADJUSTING KEYS AND WRENCHES. Get
in the habit of checking to see that hex keys and adjusting
wrenches are removed from tool before turning it on.
■ KEEP THE WORK AREA CLEAN. Cluttered work areas
and work benches invite accidents. DO NOT leave tools
or pieces of work on the machine while it is in operation.
■ DO NOT USE IN DANGEROUS ENVIRONMENTS. Do
not use power tools near gasoline or other flammable
liquids, in damp or wet locations, or expose them to rain.
Keep the work area well lit.
■ 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.
■ MAKE WORKSHOP CHILD-PROOF with padlocks and
master switches, or by removing starter keys.
■ DO NOT FORCE THE TOOL. It will do the job better and
safer at the rate for which it was designed.
■ USE THE RIGHT TOOL. Do not force the tool or
attachment to do a job it was not designed for. Don't use
it for a purpose not intended.
■ USE THE PROPER EXTENSION CORD. 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.
■ INSPECT EXTENSION CORDS PERIODICALLY and
replace if damaged.
■ DRESS PROPERLY. Do not wear loose clothing, gloves,
neckties, rings, bracelets, or other jewelry. They can get
caught and draw you into moving parts. Rubber gloves
and nonslip footwear are recommended when working
outdoors. Also wear protective hair covering to contain
long hair.
■ ALWAYS WEAR SAFETY GLASSES WITH SIDE
SHIELDS. Everyday eyeglasses have only impactresistant lenses; they are NOT safety glasses.
■ PROTECT YOUR LUNGS. Wear a face or dust mask if
the cutting operation is dusty.
■ PROTECT YOUR HEARING. Wear hearing protection
during extended periods of operation.
■ SECURE WORK. Use clamps or a vise to hold work when
practical. It's safer than using your hand and it frees both
hands to operate tool.
■ DO NOT ABUSE CORD. Never yank cord to disconnect
it from receptacle. Keep cord from heat, oil, and sharp
edges.
■ DO NOT OVERREACH. Keep proper footing and balance
at all times.
■ MAINTAIN TOOLS WITH CARE. Keep tools sharp and
clean for better and safer performance. Follow
instructions for lubricating and changing accessories.
■ DISCONNECT ALL TOOLS. When not in use, before
servicing, or when changing attachments, wheels, bits,
cutters, etc., all tools should be disconnected.
■ AVOID ACCIDENTAL STARTING. Be sure switch is off
when plugging in.
■ USE RECOMMENDED ACCESSORIES. The use of
improper accessories may cause risk of injury.
■ NEVER STAND ON TOOL. Serious injury could occur if
the tool is tipped or if the wheel is unintentionally
contacted.
■ 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.
■ NEVER LEAVE TOOL RUNNING UNATTENDED. TURN
THE POWER OFF. Do not leave tool until it comes to a
complete stop.
■ 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.
(356 mm).
■ 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.
■ 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.
Page 4
RULES FOR SAFE OPERATION
WARNING: Wheel coasts after turn off.
■ NEVER USE IN AN EXPLOSIVE ATMOSPHERE.
Normal sparking of the motor or sparking from cutting
metal could ignite fumes.
■ INSPECT TOOL CORDS PERIODICALLY and if
damaged, have repaired at your nearest Ryobi Authorized
Service Center. Stay constantly aware of cord location
and keep it well away from the rotating wheel.
■ 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.
■ DO NOT USE TOOL IF SWITCH DOES NOT TURN IT
ON AND OFF. Have defective switches replaced by an
authorized service center.
■ 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.
■ ALWAYS SUPPORT LONG WORKPIECES. To minimize
risk of tipping machine, always support long workpieces.
■ BEFORE MAKING A CUT, BE SURE ALL
ADJUSTMENTS ARE SECURE.
■ ALWAYS USE THE VISE CLAMP to secure the
workpiece.
■ NEVER TOUCH WHEEL or other moving parts during
use.
■ NEVER START THE CUT-OFF MACHINE WHEN THE
WHEEL IS IN CONTACT WITH THE WORKPIECE.
■ NEVER cut more than one workpiece at a time. DO NOT
STACK more than one workpiece on the machine base
at a time.
■ NEVER PERFORM ANY OPERATION "FREEHAND".
Always secure the workpiece to be cut in the vise.
■ NEVER hand hold a workpiece. Workpiece will become
very hot while being cut.
■ NEVER reach behind, under, or within three inches of
the wheel and its cutting path with your hands and fingers for any reason.
■ NEVER reach to pick up a workpiece, a piece of scrap,
or anything else that is in or near the cutting path of the
wheel.
■ AVOID 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.
■ NEVER stand or have any part of your body in line with
the path of the wheel.
■ ALWAYS release the power switch and allow the wheel
to stop rotating before raising it out of the workpiece.
■ 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.
■ REPLACEMENT PARTS. All repairs, whether electrical
or mechanical, should be made at a Ryobi Authorized
Service Center.
WARNING:
When servicing use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
■ NEVER leave the cut-off machine unattended while connected to a power source.
■ 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.
■ 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.
■ CHECK THE WHEEL FOR FISSURES AND CRACKS,
and test for normal operation prior to use.
■ ONLY USE A CUT-OFF WHEEL RATED FOR 3300 RPM
OR GREATER and manufactured in compliance with
ANSI B7.1. Always store wheels in a dry place with little
temperature variation.
■ ALWAYS EASE THE ABRASIVE WHEEL AGAINST
THE WORK PIECE when starting to cut. A harsh impact
can break the wheel.
■ BEFORE CUTTING, press the trigger switch and allow
the cut-off wheel to reach full speed before cutting.
■ 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.
■ DO NOT OPERATE THIS TOOL WHILE UNDER THE
INFLUENCE OF DRUGS, ALCOHOL, OR ANY
MEDICATION.
■ 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.
■ 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.
■ 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.
Page 5
RULES FOR SAFE OPERATION
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.
ELECTRICAL
EXTENSION CORDS
Use only 3-wire extension cords that have 3-prong grounding 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.
Length of Extension Cord
Wire Size (A.W.G.)
Up to 25 feet
14
26-50 feet
12
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.
electric cord having an equipment-grounding conductor 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.
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 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.
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.
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.
CAUTION:
Keep the cord away from the cutting area and position
the cord so that it will not be caught on material, tools, or
other objects during cutting.
ELECTRICAL CONNECTION
Your Abrasive Cut-Off Machine 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 INSTRUCTIONS
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
Page 6
GROUNDING
PIN
COVER OF GROUNDED
OUTLET BOX
Fig. 1
UNPACKING AND LOOSE PARTS
Your abrasive cut-off machine has been shipped completely
assembled.
■ Remove all loose parts from the carton.
■ Remove the packing materials from around your machine.
■ Carefully lift the cut-off machine from the carton and place
it on a level work surface. This is a heavy tool. To avoid
back injury, get help when needed.
■ Do not discard the packing materials until you have carefully inspected the machine, identified all loose parts, and
satisfactorily operated your new abrasive cut-off machine.
■ Your cut-off machine has been shipped with the machine
arm locked in the down position. To release the arm, push
down on top of the machine arm and remove transport
chain from bottom of motor housing. See Figure 3.
■ Hand pressure should remain on the machine arm to prevent sudden rise upon release of the transport chain.
■ Examine all parts to make sure no breakage or damage
has occurred during shipping.
If any parts are damaged or missing, do not attempt to plug
in the power cord and turn the switch on until the damaged
or missing parts are obtained and are installed correctly.
Contact your nearest Ryobi dealer or call 1-800-525-2579
for assistance if any parts are missing or damaged.
WARNING:
If any parts are missing do not operate your cut-off
machine until the missing parts are replaced. Failure to do
so could result in possible serious injury.
LOOSE PARTS LIST
The following items are included with your C357 Abrasive
Cut-Off Machine:
■ 14 in. (356 mm) – Abrasive Wheel – Installed on Machine
■ Wheel Wrench – 8 mm Hex Key – Stored on Machine
■ Operator's Manual
■ Warranty Registration
PRODUCT SPECIFICATIONS
Wheel Type
Reinforced Abrasive Wheels
Fence Angle
Wheel Diameter
14 in. (356 mm)
Right
Wheel Thickness
1/8 in. (3.2 mm)
Left
Wheel Arbor Hole
1 in. (25.4 mm)
Overall Wheel Size
No Load Speed
Rating
Input
14 in. x 1/8 in. x 1 in.
356 mm x 3.2 mm x 25.4 mm
0°
Vise Clamp Angle
Right or Left
45°
Maximum Cutting Capacities:
3300 RPM
Round Pipe
5 in. (127 mm) outside diameter
120 Volts, 60 Hz-AC Only
Angle Stock
6-1/2 in. wide x 3-5/16 in. tall
165 mm wide x 84 mm tall
15 Amperes
Net Weight
45°
52 lbs. (23.6 kg.)
Flat Metal Stock
WARNING:
This cut-off machine has been designed for cutting metals,
using reinforced abrasive cut-off wheels only. Do not
remove the wheel, install a steel blade, and attempt to cut
other types of materials such as wood, masonry, etc.
Attempting to cut these other types of materials could
cause an accident resulting in possible serious personal
injury.
8-1/16 in. wide x 2-5/16 in. tall
205 mm wide x 59 mm tall
WARNING:
Do not attempt to modify this tool or create accessories
not recommended for use with this tool. Any such alteration
or modification is misuse and could result in a harzardous
condition leading to possible serious personal injury.
DO NOT EXPOSE
TO RAIN OR USE IN
DAMP LOCATIONS
Page 7
a
FEATURES
KNOW YOUR ABRASIVE CUT-OFF MACHINE
See Figures 2 and 3.
Before attempting to use your machine, familiarize yourself
with all operating features and safety requirements.
WARNING:
Do not allow familiarity with your machine to make you
careless. Remember that a careless fraction of a second
is sufficient to inflict severe injury.
the wheel. It retracts over the upper wheel guard as the
wheel is lowered into the workpiece.
VISE CLAMP
See Figure 2.
A vise clamp has been provided with your cut-off machine.
It is located on the end of the vise screw and provides greater
control by clamping the workpiece to the fence. It also
prevents the workpiece from creeping toward the wheel
during a cutting operation.
ADJUSTABLE FENCE
MOTOR
See Figure 2.
This machine has a strong motor with sufficient power to
handle tough cutting jobs. It also has externally accessible
brushes for ease of servicing.
14 in. (356 mm) ABRASIVE WHEEL
See Figure 2.
A 14 in. (356 mm) abrasive wheel is included with your cutoff machine. It will cut materials up to 5 in. (127 mm) thick or
8 in. (203 mm) wide, depending upon the thickness or width
of the material and the setting at which the cut is being made.
SELF-RETRACTING LOWER WHEEL GUARD
See Figure 2.
The lower wheel guard provides protection from each side of
MACHINE ARM
See Figure 2.
The fence on your cut-off machine has been provided to
support the workpiece and provide clamping support to
the vise for holding your workpiece securely when making
all cuts. It is an adjustable fence that has been provided to
make your 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.
QUICK LOCK-RELEASE LEVER
See Figure 2.
A quick lock-release lever has been provided on your cut-off
machine. This feature allows you to open and close the vise
clamp quickly without repetitive turning of the vise crank handle.
SWITCH TRIGGER
LOWER
WHEEL GUARD
a
MOTOR
14 in. (356 mm)
ABRASIVE WHEEL
0
1
5
TRANSPORT
CHAIN
ADJUSTABLE
FENCE
QUICK LOCKRELEASE LEVER
VISE SCREW
VISE CLAMP
MACHINE BASE
VISE
CRANK HANDLE
Fig. 2
Page 8
a
a
FEATURES
CARRYING HANDLE
TRIGGER LOCK
See Figure 3.
For convenience when carrying or transporting your 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 your machine, then
lower machine arm and lock it in the down position. Use the
transport chain to lock machine arm in the down position.
LOCK-ON BUTTON
See Figure 4.
To prevent unauthorized use of your 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 13/64 in. diameter may be
used. When the lock is installed and locked, the switch is
inoperable. Store the padlock key in another location.
See Figure 3.
Your 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.
To release lock-on feature, depress switch trigger and release.
If you have the lock-on feature engaged during use and your
machine becomes disconnected from power supply,
disengage the lock-on feature immediately.
SWITCH TRIGGER
PADLOCK
a
a
SPINDLE LOCK BUTTON
A spindle lock button has been provided for locking the
spindle which keeps the wheel in your machine from rotating.
Depress and hold the spindle lock button while installing,
changing, or removing wheel only.
Fig. 4
LOCK-ON
BUTTON
CARRYING HANDLE
SPINDLE
LOCK BUTTON
UPPER
WHEEL GUARD
MACHINE ARM
SWITCH TRIGGER
LOWER
WHEEL GUARD
POWER CORD
14 in. (356 mm)
ABRASIVE WHEEL
QUICK LOCKRELEASE LEVER
TRANSPORT
CHAIN
VISE CRANK
HANDLE
WRENCH
STORAGE
FENCE
BOLTS
RUBBER FEET
8 mm
HEX KEY
ADJUSTABLE
FENCE
VISE CLAMP
MACHINE BASE
Page 9
Fig. 3
ADJUSTMENTS
a
INNER
WASHER
WARNING:
To prevent accidental starting that could cause possible
serious personal injury, assemble all parts to your cut-off
machine before connecting it to power supply. Machine
should never be connected to power supply when you
are assembling parts, making adjustments, installing or
removing wheels, or when not in use.
BL
AD
E
R
O
TA
T
I0
N
WHEEL
ARBOR
14 in. (356 mm)
ABRASIVE
WHEEL
a
INNER
FLANGE
As mentioned previously your cut-off machine has been
factory assembled and adjusted. After extended use and
wear, the wheel will need to be replaced with a new one.
OUTER
WASHER
WARNING:
A 14 in. (356 mm) 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
securing the wheel on the spindle. Either of these
situations could result in a serious accident and can cause
serious personal injury.
SPACER
WHEEL BOLT
OUTER FLANGE
Fig. 5
TO INSTALL
REMOVAL AND INSTALLATION OF WHEEL
See Figure 5.
■ Unplug your cut-off machine.
TO REMOVE
See Figure 5.
■ Unplug your cut-off machine.
WARNING:
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
WARNING:
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
■ Push down on machine arm and remove transport chain
from hook on motor housing to release machine arm.
■ Raise machine arm to its full raised position. Be cautious
when raising, machine arm is spring loaded.
■ Rotate lower wheel guard upward, exposing 8 mm socket
head bolt that secures abrasive wheel to wheel arbor.
■ Depress the spindle lock button and rotate bolt until
spindle locks, preventing shaft from rotating.
■ Using the 8 mm hex key provided, loosen and remove
bolt. Note: Bolt has right hand threads. Turn bolt
counterclockwise to loosen.
■ 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.
■ 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 3300 rpm, do not
use. Select another wheel.
■ Clean debris from the inner washer and inner flange.
■ Place new wheel over spacer, then place both on wheel
arbor against inner flange.
■ Clean outer flange, then align flats with flats on wheel
arbor and slide it onto arbor until it is flush against wheel.
■ Place recessed side of outer washer against arbor, then
insert socket head bolt into threaded end of wheel arbor.
■ Start threads and turn bolt clockwise to snugly tighten.
■ Depress the spindle lock button and rotate bolt until
spindle locks, preventing shaft from rotating.
■ Using the 8 mm hex key provided, securely tighten socket
head bolt. Note: Bolt has right hand threads. Turn bolt
clockwise to tighten.
WARNING:
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 socket head bolt. Overtightening can
cause the new wheel to crack, resulting in premature
failure and possible serious personal injury.
Page 10
aa
aa
ADJUSTMENTS
ADJUSTABLE FENCE
See Figure 6.
The adjustable fence is located at the rear of your cut-off
machine. As mentioned previously, it is used along with the
vise clamp to provide a clamp for holding your workpiece
securely when making cuts. It also makes your cut-off
machine more versatile.
SCALE
INDICATOR
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.
VISE
CLAMP
0
1
5
CUTTING ANGLE ADJUSTMENT
See Figures 6 and 7.
■ Unplug your cut-off machine.
FENCE
SCALE
WARNING:
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
ADJUSTABLE
FENCE
Fig. 6
■ Using the 8 mm hex key supplied, loosen the two socket
head bolts securing adjustable fence. See Figure 7.
■ Rotate fence until the desired angle of cut on the scale is
aligned with the indicator in machine base.
■ For precise cuts, check the angle of cut for the fence
against the abrasive wheel with a protractor, bevel square,
or other similar device.
■ Using the 8 mm hex key supplied, securely tighten socket
head bolts. Return hex key to its storage area in base.
ADJUSTABLE
FENCE
THREADED
HOLE
■ This will secure the fence in place at desired angle.
See Figure 6.
ADJUSTING WIDTH OF CUT
See Figures 7 and 8.
■ Unplug your cut-off machine.
SOCKET HEAD
BOLTS
WARNING:
Fig. 7
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
■ To increase the width of cut of your cut-off machine, use
the 8 mm hex key to loosen and remove the socket head
bolts and washers securing fence to machine base.
■ Reposition the curved slot of the fence with the threaded
hole in back of the machine base.
■ Install a socket head bolt through a lock washer and flat
washer into machine base. Do not tighten bolt securely.
■ Align remaining fence bolt hole with the middle threaded
hole in the machine base.
■ Install socket head bolt through lock washer and flat
washer into machine base.
■ Check and adjust fence to desired cutting angle.
ADJUSTABLE
FENCE
Page 11
SOCKET HEAD
BOLTS
Fig. 8
a
aa
ADJUSTMENTS
■ Using the 8 mm hex key supplied, securely tighten socket
head bolts. Return hex key to its storage area in base.
■ This position is good for cutting thin and wide pieces of
stock, such as flat or angled stock.
■ To increase the height of cut of your cut-off machine,
follow the above procedure except place the rear socket
head bolt in the middle threaded hole and the front socket
head bolt in the front threaded hole.
■ Check and adjust fence to desired cutting angle.
■ Using the 8 mm hex key supplied, securely tighten socket
head bolts. Return hex key to its storage area in base.
■ This position is good for cutting tall and thick pieces of
stock, such as square or tube stock.
QUICK LOCK-RELEASE LEVER
See Figures 9 and 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:
See Figure 9.
■ Unplug your cut-off machine.
WARNING:
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
■ Release tension on the vise clamp by rotating the vise
crank handle 1/2 to 1 turn counterclockwise.
■ Lift up the quick lock-release lever as shown in figure 9
and pull back on vise crank handle to slide open the vise.
To tighten:
VISE CRANK
HANDLE
VISE
CLAMP
QUICK LOCK-RELEASE LEVER
WITH THREADS NOT ENGAGED
Fig. 9
VISE CRANK
HANDLE
VISE
CLAMP
VISE
SCREW
QUICK LOCK-RELEASE LEVER
WITH THREADS ENGAGED
Fig. 10
See Figure 10.
■ Unplug your cut-off machine.
WARNING:
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
■ Push the vise crank handle forward to slide the vise clamp
against the workpiece.
■ Rotate the quick lock-release lever forward and push
down as shown in figure 10 to engage its threads with
the vise screw.
■ Rotate the vise crank handle clockwise to tighten the vise
clamp against the workpiece.
Page 12
a
ADJUSTMENTS
a
DEPTH STOP
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.
The adjustable depth stop is a bolt threaded into the base of
the machine at the rear. To adjust the depth stop use the
8 mm hex key supplied to raise or lower the depth stop bolt.
The depth stop is factory set to provide maximum cutting
capacity for the 14 in. (356 mm) abrasive wheel provided
with your cut-off machine.
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.
0
1
5
0
1
5
DEPTH STOP
BOLT
DEPTH STOP ADJUSTMENTS
See Figure 11.
■ Unplug your cut-off machine.
DEPTH STOP
BOLT
WARNING:
Failure to unplug cut-off machine could result in accidental starting causing possible serious personal injury.
CAUTION:
Do not start your abrasive cut-off machine without
checking 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.
0
1
5
■ Loosen the depth stop bolt that is against the machine
base.
■ The depth stop is lowered by turning the depth stop bolt
clockwise and raised by turning the bolt counterclockwise.
■ 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.
■ Adjust if necessary.
TO LOWER
TO RAISE
Fig. 11
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.
■ Tighten the depth stop bolt with the 8 mm hex key
provided.
OPERATION
APPLICATIONS
(Use only for the purposes listed below)
■ Cutting all types of metals such as 2 in. x 6 in. steel
framing studs.
■ Cutting hard metal iron stock such as square bar stock
and angle iron.
■ Cutting metal tube and pipe stock.
Page 13
aa
a
a
OPERATION
POWER SUPPLY
SWITCH
SWITCH
TRIGGER
MACHINE ARM
(HANDLE)
LOCK-ON
BUTTON
aa
Before operating your cut-off machine, check your 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.
Common causes of power loss and machine overheating
are insufficient extension cord size and multiple tools
operating from the same power source.
To turn your cut-off machine ON, depress the switch trigger
located in the handle portion of the machine arm.
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 your machine will continue running.
To release the lock-on feature, depress the switch trigger
and release.
If you have the lock-on feature engaged during use and your
machine becomes disconnected from power supply, or in the
event of a power failure, disengage the lock-on feature
immediately.
MACHINE
BASE
CUTTING WITH YOUR CUT-OFF MACHINE
ADJUSTABLE
FENCE
See Figures 12 and 13.
0
1
5
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.
“C” CLAMP
AREA
MATERIAL
TO BE CUT
■ To prevent machine movement or tipping during cutting
procedure, secure cut-off machine in place to a
workbench or work surface that is also secure.
WARNING:
WARNING:
Always use the vise on the cut-off machine to prevent
accidents that could result in possible serious personal
injury.
WARNING:
MATERIAL
TO BE CUT
Fig. 12
VISE
CLAMP
Fig. 13
Large, circular, or irregularly shaped material may require
additional means of clamping to be secured in place
adequately for cutting. Use “C” clamps that can be
mounted along the left and front side of the machine base.
Also use blocks to hold material securely. Failure to
comply could result in serious personal injury.
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.
WARNING:
To avoid accidental start up of your 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.
Page 14
aa
a
a
OPERATION
CUT-OFF
MACHINE ARM
(HANDLE)
See Figures 14 and 15.
aa
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.
SWITCH
TRIGGER
ADJUSTABLE
FENCE
To cut with your cut-off machine:
■ Firmly secure the material to be cut using the machine’s
vise (adjustable fence and vise clamp).
■ Using the 8 mm hex key supplied, loosen the socket head
bolts securing the fence. See Figures 14 and 15.
■ Rotate the adjustable fence to the angle needed.
■ Retighten socket head bolts securing fence.
■ Return hex key to its storage area in base.
MACHINE
BASE
WARNING:
To avoid serious personal injury, always tighten socket
head bolts securely before making a cut. Failure to do so
could result in movement of the workpiece while making
a cut.
1
5
ADJUSTABLE
FENCE
0
■ Place the workpiece flat on the machine base with one
surface securely against the adjustable fence.
■ Align cutting line on the workpiece with the edge of the
abrasive wheel.
■ 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:
“C” CLAMP
AREA
To avoid serious personal injury, keep your hands at least
3 in. (76.2 mm) from wheel.
■ 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.
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.
■ Before turning on machine, perform a dry run of the cutting
operation just to make sure that no problems will occur
when the cut is made.
■ Start the machine by grasping the handle and fully
squeezing the switch trigger. Allow several seconds for
the wheel to build up to full speed before letting it come
into contact with the material to be cut.
MATERIAL
TO BE CUT
MATERIAL
TO BE CUT
VISE
CRANK
HANDLE
Fig. 14
VISE
CLAMP
Fig. 15
■ 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.
■ When the cut is complete, release the switch trigger and
allow the wheel to stop rotating before raising the wheel
out of workpiece.
WARNING:
Do not touch the cut material until it cools or you can be
burned. Failure to heed this warning could result in serious
personal injury.
Page 15
MAINTENANCE
EXTENSION CORDS
WARNING:
When servicing, use only identical Ryobi replacement
parts. Use of any other part may create a hazard or cause
product damage.
GENERAL
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 a clean cloth to remove dirt, carbon dust, etc.
The use of any extension cord will cause some loss of power.
To keep the loss to a minimum and to prevent tool
overheating, use an extension cord that is heavy enough to
carry the current the tool will draw.
A wire gage size (A.W.G.) of at least 14 is recommended for
an extension cord 25 feet or less in length. When working
outdoors, use an extension cord that is suitable for outdoor
use. The cord's jacket will be marked WA.
WARNING:
Keep extension cords away from the cutting area and
position the cord so that it will not get caught on materials, tools, etc., during cutting operation.
CAUTION:
Do not at any time let brake fluids, gasoline, petroleumbased products, penetrating oils, etc. come in contact
with plastic parts. They contain chemicals that can
damage, weaken or destroy plastic.
LUBRICATION
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 lubrication is required.
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.
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.
Page 16
MAINTENANCE
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
BRUSH
ASSEMBLY
BRUSH REPLACEMENT
a
a
See Figure 16.
Your cut-off machine has externally accessible brush
assemblies that should be periodically checked for wear.
Proceed as follows when replacement is
required:
BRUSH
ASSEMBLY
■ Unplug your cut-off machine.
WARNING:
0
1
5
Failure to unplug cut-off machine could result in accidental
starting causing possible serious personal injury.
■ Remove brush cap with a screwdriver. Brush assembly
is spring loaded and will pop out when you remove
brush cap.
■ Remove brush assembly.
■ 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.
■ Reassemble using new brush assemblies. Make sure
curvature of brush matches curvature of motor and that
brush moves freely in brush tube.
BRUSH
CAP
Fig. 16
■ Make sure brush cap is oriented correctly (straight) and
replace.
■ Tighten brush cap securely. Do not overtighten.
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.
4. Replace circuit fuse.
5. Have the switch replaced at your
nearest authorized service center
and request a voltage check from
the power company.
3. Circuit breaker is tripped.
4. Circuit fuse is blown
5. Switch is damaged or burned out.
Page 17
TROUBLESHOOTING
PROBLEM
CAUSE
SOLUTION
Motor does not reach full speed or
power.
1. Voltage from power source is low.
1. Request a voltage check from the
power company.
2. Test on a different circuit or without
anything else on circuit.
3. Have tool serviced and request
a 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.
2. Circuit is overloaded.
3. Motor burned out.
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.
2. Voltage from source is low.
3. Fuses or circuit breakers are
wrong size or defective.
1. Have the switch replaced at your
nearest authorized service center.
2. Request a voltage check from the
power company.
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.
1. Motor needs attention.
1. Have the motor checked at your
nearest authorized service center.
Wheel hits table.
1. Wheel not properly installed.
1. See “Removal and Installation of
Wheel” section.
2. Adjust the depth stop. See “Depth
Stop” section.
2. Depth stop setting incorrect.
Wheel does not cut through workpiece. 1. Depth stop setting incorrect.
2. Wheel worn too much.
3. Incorrect cutting operation.
Machine vibrates or shakes excessively. 1. Wheel is out-of-round.
2. Wheel is chipped
3. Wheel is loose.
4. Machine is not secure.
5. Work surface is uneven.
Page 18
1. Adjust the depth stop. See “Depth
Stop” section.
2. Replace with a new 14 inch abrasive
cut off wheel.
3. See “Cut-Off” section.
1. Replace wheel.
2. Replace wheel.
3. Tighten wheel bolt on arbor.
4. Check and tighten all hardware.
5. Relocate and secure on a flat
surface.
NOTES
Page 19
OPERATOR'S MANUAL
14 in. (356 mm) Abrasive Cut-Off
Model C357
EXTENSION CORD CAUTION
When using a power tool at a considerable distance from a power
source, be sure to use an extension cord that has the capacity
to handle the current the tool will draw. An undersized cord will
cause a drop in line voltage, resulting in overheating and loss of
power. Use the chart to determine the minimum wire size required in an extension cord. Only round jacketed cords should
be used.
When working with a 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 any extension cord, inspect it for loose or exposed
wires and cut or worn insulation.
**Ampere rating
(on tool data plate)
0-2.0
Cord Length
2.1-3.4
3.5-5.0
5.1-7.0
7.1-12.0 12.1-16.0
Wire Size (A.W.G.)
25'
16
16
16
16
14
14
50'
16
16
16
14
14
12
100'
16
16
14
12
10
—
CAUTION: Keep the extension cord clear of the working
area. Position the cord so that it will not get caught on workpiece,
tools, or other obstructions while you are working with a power
tool.
**Used on 12 gauge - 20 amp circuit.
• 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 Authorized Service Center. You can also check our web site at
www.ryobitools.com for a complete list of Authorized Service Centers.
• MODEL NO.
The model and serial numbers of your tool will be found on a plate attached to the motor
housing. Please record the serial number in the space provided below.
•
MODEL NUMBER C357
•
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
www.ryobitools.com
972000-882