User manual | Ryobi C357 Operator`s manual

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OPERATOR'S MANUAL

14 in. (356 mm) Abrasive Cut-Off

Machine – Model C357

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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.

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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.

NOTE:

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.

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


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


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 POSI-

TIONS 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 MISS-

ING 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 LIGHT-

ING 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


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

Up to 25 feet

Wire Size (A.W.G.)

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.

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 house-

hold 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 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.

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

Wheel Type

Wheel Diameter

Wheel Thickness

Wheel Arbor Hole

Overall Wheel Size

No Load Speed

Rating

Input

Net Weight

PRODUCT SPECIFICATIONS

Reinforced Abrasive Wheels

14 in. (356 mm)

1/8 in. (3.2 mm)

1 in. (25.4 mm)

14 in. x 1/8 in. x 1 in.

356 mm x 3.2 mm x 25.4 mm

3300 RPM

120 Volts, 60 Hz-AC Only

15 Amperes

52 lbs. (23.6 kg.)

Fence Angle

Right

Left

Vise Clamp Angle

45

0

Right or Left

Maximum Cutting Capacities:

Round Pipe

Angle Stock

45

°

5 in. (127 mm) outside diameter

6-1/2 in. wide x 3-5/16 in. tall

165 mm wide x 84 mm tall

°

°

Flat Metal Stock 8-1/16 in. wide x 2-5/16 in. tall

205 mm wide x 59 mm tall

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.

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

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.

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

MOTOR

TRANSPORT

CHAIN

MACHINE ARM

1

5 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

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

14 in. (356 mm)

ABRASIVE WHEEL

ADJUSTABLE

FENCE RELEASE LEVER

VISE SCREW

VISE

QUICK LOCK-

CRANK HANDLE

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Fig. 2

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VISE CLAMP

FEATURES

MACHINE BASE

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CARRYING HANDLE

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 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.

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.

POWER CORD

TRANSPORT

CHAIN

WHEEL GUARD

RUBBER FEET aa a

UPPER

SPINDLE

LOCK BUTTON

FENCE

BOLTS

FEATURES

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ADJUSTABLE

FENCE

TRIGGER LOCK

See Figure 4.

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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.

CARRYING HANDLE

Page 9

LOCK-ON

BUTTON

VISE CLAMP

MACHINE BASE

SWITCH TRIGGER

PADLOCK

MACHINE ARM

SWITCH TRIGGER

LOWER

WHEEL GUARD

14 in. (356 mm)

ABRASIVE WHEEL

QUICK LOCK-

RELEASE LEVER

8 mm

VISE CRANK

HEX KEY

HANDLE

WRENCH

STORAGE

Fig. 3

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a

Page 10

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:

■ 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.

counterclockwise to loosen.

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

WARNING: removing wheels, or when not in use.

WARNING: serious personal injury.

TO REMOVE

See Figure 5.

■ Unplug your cut-off machine.

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

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.

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

REMOVAL AND INSTALLATION OF WHEEL

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

SPACER

TO INSTALL

See Figure 5.

BL

A

D

E

O

TA aaaa

ADJUSTMENTS

N aaa

WARNING:

INNER

FLANGE


use. Select another wheel.

arbor against inner flange.

INNER

WASHER

WHEEL

ARBOR

14 in. (356 mm)

ABRASIVE

WHEEL

OUTER

WASHER

WHEEL BOLT

OUTER FLANGE starting causing possible serious personal injury.

Fig. 5

Failure to unplug cut-off machine could result in accidental

■ 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

■ Clean debris from the inner washer and inner flange.

■ Place new wheel over spacer, then place both on wheel

■ 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.

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■ 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:

Do not overtighten socket head bolt. Overtightening can cause the new wheel to crack, resulting in premature failure and possible serious personal injury.

a a a a a a a a a a a a a a a

ADJUSTABLE FENCE

See Figure 6.

machine more versatile.

or thick stock.

CUTTING ANGLE ADJUSTMENT



WARNING: or other similar device.

ADJUSTING WIDTH OF CUT



WARNING: hole in back of the machine base.

hole in the machine base.

washer into machine base.

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

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


■ 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,

■ Using the 8 mm hex key supplied, securely tighten socket head bolts. Return hex key to its storage area in base.

■ This will secure the fence in place at desired angle.

See Figure 6.


■ 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

■ 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

■ Install socket head bolt through lock washer and flat

■ Check and adjust fence to desired cutting angle.

Page 11

ADJUSTMENTS

SCALE

INDICATOR

FENCE

SCALE

THREADED

HOLE

ADJUSTABLE

FENCE

ADJUSTABLE

FENCE aa aa aaa a a aa aa aa a a aa a a

0

1

5

ADJUSTABLE

FENCE

VISE

CLAMP

SOCKET HEAD

BOLTS

SOCKET HEAD

BOLTS

Fig. 6

Fig. 7

Fig. 8 a aa aaa a a aa aa aaaa a a aaaa aa a a a

Page 12 a a aa a a aaaaa a a aaaa a aaa a a aaa a a a a a aa a a a a a aa a a aaaaa a a aaaa a aaa a aa aaa aa

ADJUSTMENTS

VISE

SCREW


■ This position is good for cutting thin and wide pieces of

■ 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

■ Check and adjust fence to desired cutting angle.


■ This position is good for cutting tall and thick pieces of

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

USING THE QUICK LOCK-RELEASE LEVER


■ 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.


■ Push the vise crank handle forward to slide the vise clamp

■ Rotate the quick lock-release lever forward and push down as shown in figure 10 to engage its threads with

■ Rotate the vise crank handle clockwise to tighten the vise

VISE

VISE stock, such as flat or angled stock.

head bolt in the front threaded hole.

stock, such as square or tube stock.



handle.

AND VISE CLAMP

To loosen:

See Figure 9.


WARNING:

To tighten:

See Figure 10.


WARNING: against the workpiece.

the vise screw.

clamp against the workpiece.

aa aa

CLAMP

CLAMP aa aa aa aa aa aa aa aa aa aa aaa aaaaa aaa aaa aa

QUICK LOCK-RELEASE LEVER aaaa

VISE CRANK

HANDLE

VISE CRANK

HANDLE

Fig. 10 aaaaa aaa

WITH THREADS ENGAGED aaa aa

WITH THREADS NOT ENGAGED


Fig. 9 aaaaaa a a a a a a a a a aa a a a a a a

■ Tighten the depth stop bolt with the 8 mm hex key provided.

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.

■ Adjust if necessary.

■ 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.

■ The depth stop is lowered by turning the depth stop bolt clockwise and raised by turning the bolt counterclockwise.

a a a

■ Loosen the depth stop bolt that is against the machine base.

DEPTH STOP

to maintain full cutting capacities.

with your cut-off machine.

to the machine base support.

DEPTH STOP ADJUSTMENTS

See Figure 11.


WARNING:

The depth stop limits the wheel's downward travel. It allows the wheel to go below the machine base enough

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

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


aa aa

ADJUSTMENTS

DEPTH STOP

BOLT

0

1 5 aa a a

aaaaa

a a

aaaa

aa

0

1 5

DEPTH STOP

BOLT

0

1 5

TO LOWER aa

aa

aaa a a a a a aa a a a

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.

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

WARNING: injury.

LOCK-ON BUTTON

and your machine will continue running.

and release.

immediately.


WARNING: personal injury.

WARNING:

POWER SUPPLY

loss of power and machine overheating.

operating from the same power source.

SWITCH

To turn it OFF, release the switch trigger.

OPERATION

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

Common causes of power loss and machine overheating are insufficient extension cord size and multiple tools

To turn your cut-off machine ON, depress the switch trigger located in the handle portion of the machine arm.

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

To release the lock-on feature, depress the switch trigger

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

CUTTING WITH YOUR CUT-OFF MACHINE

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

■ 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.

Always use the vise on the cut-off machine to prevent accidents that could result in possible serious personal

aa aaa

MACHINE ARM

(HANDLE)

LOCK-ON

BUTTON

MACHINE

BASE

ADJUSTABLE

FENCE

“C” CLAMP

AREA

MATERIAL

TO BE CUT

WARNING:

1 5

SWITCH

TRIGGER

MATERIAL

TO BE CUT

VISE

Fig. 12

CLAMP

Fig. 13

Large, circular, or irregularly shaped material may require

aaaaa aaa aa aaaaa

a 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

a a a cut.

WARNING: abrasive wheel.

WARNING:

3 in. (76.2 mm) from wheel.

level with the machine base.

WARNING:

CUT-OFF


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.

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.

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

■ 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

■ 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.

To avoid serious personal injury, keep your hands at least

■ When cutting long pieces, support the opposite end of the material with a roller stand or with a work surface

OPERATION

MACHINE ARM

(HANDLE)

ADJUSTABLE

FENCE

MACHINE

BASE

ADJUSTABLE

FENCE

“C” CLAMP

AREA

MATERIAL

TO BE CUT

■ Once it reaches full speed slowly lower the handle of the aaa

1 5

VISE

CLAMP

Fig. 15

aa

aa

aaaa aa aa

SWITCH

TRIGGER

MATERIAL

TO BE CUT

VISE

CRANK

HANDLE

Fig. 14 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.

aa

aaa aa aaaaa

a a a a a aa a a a a a aa a a

aaaaa

a

Never force the wheel into the material being cut.

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.

■ When the cut is complete, release the switch trigger and allow the wheel to stop rotating before raising the wheel out of workpiece.

■ 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.

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

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.

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.

EXTENSION CORDS

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.

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

Page 17

Machine does not start

PROBLEM CAUSE

WARNING:

BRUSH REPLACEMENT

See Figure 16.

required:


WARNING: brush cap.

■ Remove brush assembly.

brush moves freely in brush tube.

MAINTENANCE

To ensure safety and reliability, all repairs — with the exception of the externally accessible brushes — should be performed by a Ryobi Authorized Service Center.

Your cut-off machine has externally accessible brush assemblies that should be periodically checked for wear.

Proceed as follows when replacement is


■ Remove brush cap with a screwdriver. Brush assembly is spring loaded and will pop out when you remove

■ 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

aaa aa

BRUSH CAP

BRUSH

ASSEMBLY

BRUSH

ASSEMBLY

BRUSH

CAP

■ Make sure brush cap is oriented correctly (straight) and replace.

0

1 5 a

TROUBLESHOOTING

SOLUTION

Fig. 16

■ Tighten brush cap securely. Do not overtighten.

aaaaa

a

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. Circuit breaker is tripped.

4. Circuit fuse is blown

3. Reset circuit breaker.

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.

TROUBLESHOOTING

PROBLEM CAUSE SOLUTION

Motor does not reach full speed or power.

Motor stalls, blows fuses, or trips circuit breakers.

Motor overheats.

Machine is noisy when running.

Wheel hits table.

1. Voltage from power source is low.

1. Request a voltage check from the

power company.

2. Circuit is overloaded.

3. Motor burned out.

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. Fuses or circuit breakers are

wrong size.

5. Extension cord is too long.

6. Switch is defective.

4. Have an electrician replace with a

15 amp fuse or circuit breaker.

5. Use a shorter extension cord.



1. Switch is defective.

2. Voltage from source is low.




power company.

3. Have an electrician replace with a 15

amp fuse or circuit breaker.

3. Fuses or circuit breakers are

wrong size or defective.

1. Motor is overloaded.


power company.

2. Wheel is being fed into work too fast. 2. Feed wheel into work slower.

1. Motor needs attention.

1. Have the motor checked at your


1. Wheel not properly installed.

2. Depth stop setting incorrect.

Wheel does not cut through workpiece. 1. Depth stop setting incorrect.

2. Wheel worn too much.

1. See “Removal and Installation of

Wheel” section.

2. Adjust the depth stop. See “Depth

Stop” section.

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.

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.

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.

Page 18

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

25'

50'

16

16

100' 16

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.)

16

16

16

16

16

14

16 14 12

14

14

10

14

12

—

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

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