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Page 7

KNOW YOUR ANGLE GRINDER

Before attempting to use your grinder, familiarize yourself
with all operating features and safety requirements. 

See

Figure 1.

Make sure all grinding wheels  and recommended accessories
are in accordance with listed specifications for this tool. For
example, do not use grinding wheels that are rated at less
than 11,000 RPM.

HEAVY DUTY MOTOR

Your Ryobi G1151C Angle Grinder has a powerful motor,
with sufficient power to handle tough grinding jobs that
require heavy duty performance. The motor has externally
accessible brushes for ease of servicing.

GUARD

A protective guard has been provided on your grinder. It
deflects sparks and metal chips during use.

SLIDE SWITCH WITH LOCK-ON FEATURE

Your grinder has a conveniently located slide switch. It also
has a lock-on feature that allows the grinder to be locked in
the on position when continuous operation for extended
periods of time is required.

SPINDLE LOCK BUTTON

The spindle lock button secures the spindle so that only one
wrench is needed to change the grinding wheel.

SIDE HANDLE

The side handle provided, stabilizes your grinder and must
be used during all grinding operations. In addition to
maintaining safe control during use, the side handle also
provides convenient ease of operation for the operator.

APPLICATIONS

(Use only for the purposes listed below)

Grinding metals.

Preparing surfaces to be welded.

Grinding welds.

Fig. 1

WARNING:

Do not allow familiarity with your grinder to make you
careless. Remember that a careless fraction of a second
is sufficient to inflict severe injury.

ELECTRICAL CONNECTION

Your grinder has 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 your tool does
not operate when plugged into an outlet, double-check the
power supply.

SPINDLE

LOCK BUTTON

SWITCH

SIDE HANDLE

GUARD

GRINDING WHEEL

FEATURES

Summary of Contents for G1151C

Page 1: ... this entire owner s manual before using your new angle grinder Pay close attention to the Rules for Safe Operation Warnings and Cautions If you use your grinder properly and only for what it is intended you will enjoy years of safe reliable service Please fill out and return the Warranty Service Registration Card so that we can be of future service to you Thank you again for buying Ryobi tools SP...

Page 2: ...ifications 1 Typical Application 2 Rules For Safe Operation 3 6 Unpacking 6 Features 7 Adjustments 8 9 Operation 9 10 Maintenance 11 12 Parts Ordering Service 14 TABLE OF CONTENTS G1151C ANGLE GRINDER TYPICAL APPLICATION ...

Page 3: ...sdonotneedtobegrounded IMPORTANT Servicing of a tool with double insulation requires extreme care and knowledge of the system and should be performed only by a qualified service technician For service we suggest you return the tool to your nearest RYOBI FACTORY or AUTHORIZED SERVICE CENTER for repair When servicing use only identical Ryobi replacement parts The purpose of safety symbols is to attr...

Page 4: ...veryday eyeglasses have only impact resistant lenses they are NOT safety glasses 12 PROTECT YOUR LUNGS Wear a face or dust mask if operation is dusty 13 PROTECT YOUR HEARING Wear hearing protection during extended periods of operation 14 DON T ABUSE THE CORD Never carry the tool by its cord or yank the cord to disconnect it from the receptacle Keep the cord from heat oil and sharp edges 15 SECURE ...

Page 5: ...1 DO NOT USE A TOOL IF THE SWITCH DOES NOT TURN IT ON AND OFF Have defective switches replaced by a RYOBI FACTORY or AUTHORIZED SERVICE CENTER 32 NEVER LEAVE THE TOOL RUNNING UNATTENDED Turn off the power Do not leave the tool until it comes to a complete stop 33 DRUGS ALCOHOL MEDICATION DO NOT operate tool while under the influence of drugs alcohol or any medication 34 REPLACEMENT PARTS When serv...

Page 6: ...ed do not install it 4 Do not overtighten the clamp nut on the grinding wheel Excessive tightening can cause the wheel to crack during operation 5 Make sure that the guard is in good condition and securely installed before operating grinder 6 Do not clamp the grinder in a vise or use as a fixed grinder 7 Never turn on the grinder with the grinding wheel or any rotating parts touching the workpiece...

Page 7: ... required SPINDLE LOCK BUTTON The spindle lock button secures the spindle so that only one wrench is needed to change the grinding wheel SIDE HANDLE The side handle provided stabilizes your grinder and must be used during all grinding operations In addition to maintaining safe control during use the side handle also provides convenient ease of operation for the operator APPLICATIONS Use only for t...

Page 8: ... clamp nut attached to the spindle Depress spindle lock button and rotate clamp nut until spindle locks Loosen and remove clamp nut from spindle Do not remove disc flange Make sure flats on disc flange are engaged with flats on spindle Place the grinding wheel over the spindle with the concave side of the wheel facing up WARNING Always install grinding wheel with the depressed center against the d...

Page 9: ...arks from metal grinding can cause a fire Avoid spark contact with flammable materials such as saw dust or clothing Grinding wheels must be free of fissures and cracks Fissures and cracks can cause a grinding wheel to shatter resulting in possible serious injury Thoroughly inspect a new grinding wheel before it is installed on the grinder 1 Use a wooden hammer for the inspection 2 Using the hammer...

Page 10: ...und at an acute angle normally between 5 to 15 degrees For maximum control hold the grinder in front and away from you with both hands keeping the grinding wheel clear of the workpiece Start your grinder and let the motor and grinding wheel build up to full speed Gradually lower grinder until the grinding wheel contacts the workpiece For best results keep the grinder tilted at an angle from 5 to 1...

Page 11: ...osen the clamp screw until the guard can be adjusted or removed If you are making adjustments rotate the guard to its correct position as shown in figure 7 then retighten clamp screw securely Never use your grinder with out the guard correctly in place If you are replacing the guard loosen the clamp screw until the guard and clamp can be removed from the bearing cap Place the new guard and clamp o...

Page 12: ...ol are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normaloperatingconditions Therefore nofurtherlubrication is required GENERAL Avoidusingsolventswhencleaningplasticparts Mostplastics are susceptible to damage from various types of commercial solvents and may be damaged by their use Use clean cloths to remove dirt carbon dust etc WARNING Do not at any...

Page 13: ...Page 13 NOTES ...

Page 14: ...ket 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 2 1 3 4 3 5 5 0 5 1 7 0 7 1 12 0 12 1 16 0 Cord Length Wire Size A W G 25 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...

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