Ryobi G1151C User Manual
OWNER'S OPERATING MANUAL
4-1/2 in. (115 mm) Angle Grinder
Model G1151C /
Double Insulated
SPECIFICATIONS:
Grinding Wheel Capacity 4-1/2 in. (115 mm)
Rating 120 Volts, 60 Hz, AC Only
No Load Speed 11,000 RPM
Amperes 6 Amperes
Spindle Thread Size 5/8-11 UNC
Overall Length 10-5/16 in. (262 mm)
Net Weight 5.3 lbs. (2.4 kg.)
THANK YOU FOR BUYING A RYOBI ANGLE GRINDER.
Your new angle grinder has been engineered and manufactured to Ryobi's high standard 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 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.
SAVE THIS MANUAL FOR FUTURE REFERENCE
TABLE OF CONTENTS
■ Product Specifications ..................................................................................................... 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
TYPICAL APPLICATION
G1151C ANGLE GRINDER
Page 2
SAFETY GLASSES
FORESIGHT IS BETTER
THAN NO SIGHT
R
WEAR YOUR
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 caution or warning. 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.
DOUBLE INSULATION
Double insulation is a concept in safety, in electric power
tools, which eliminates the need for the usual three-wire
grounded power cord. All exposed metal parts are isolated
from the internal metal motor components with protecting
insulation. Double insulated tools do not need to be grounded.
WARNING:
The double insulated system is intended to protect the
user from shock resulting from a break in the tool's
internal wiring. Observe all normal safety precautions
related to avoiding electrical shock.
WARNING:
The operation of any grinder can result in foreign objects being thrown into your eyes,
SAFETY GLASSES
FORESIGHT IS BETTE
THAN NO SIGHT
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.
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.
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 owner's manual
and review frequently for continuing safe operation, and
instructing others who may use this tool.
Page 3
RULES FOR SAFE OPERATION (Continued)
READ ALL INSTRUCTIONS
1. KNOW YOUR POWER TOOL. Read owner's
manual carefully. Safe operation of this power
tool requires that you read and understand this
owner's manual and all labels affixed to the tool.
Learn its applications and limitations as well as
the specific potential hazards related to this tool.
2. GUARD AGAINST ELECTRICAL SHOCK.
Prevent body contact with grounded surfaces.
For example: Pipes, radiators, ranges,
refrigerator enclosures.
3. KEEP GUARDS IN PLACE and in good working
order.
4. KEEP THE WORK AREA CLEAN. Cluttered
work areas and work benches invite accidents.
5. DON'T USE IN DANGEROUS ENVIRONMENTS.
Don't use power tools in damp or wet locations
or expose them to rain. Keep the work area well
lit.
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 THE WORK. Use clamps or a vise to
hold the work when practical. It's safer than using
your hand and it frees both hands to operate the
tool.
16. DON'T OVERREACH. Keep proper footing and
balance at all times. Do not use on a ladder or
unstable support.
17. MAINTAIN TOOLS WITH CARE. Keep tools
sharp and clean for best and safest performance.
Follow instructions for lubricating and changing
accessories.
6. KEEP CHILDREN AND VISITORS AWAY
FROM POWER TOOLS. Do not let visitors
contact tool or extension cord. All visitors should
wear safety glasses and be kept a safe distance
from work area.
7. STORE IDLE TOOLS. When not in use tools
should be stored in a dry and high or locked-up
place — out of the reach of children.
8. DON'T FORCE THE TOOL. It will do the job
better and safer at the rate for which it was
designed.
9. USE THE RIGHT TOOL. Don't force a small tool
or attachment to do the job of a heavy duty tool.
Don't use the tool for a purpose not intended —
for example — A circular saw should never be
used for cutting tree limbs or logs.
10. WEAR PROPER APPAREL. Do not wear loose
clothing, neckties, rings, bracelets, or other
jewelry that can get caught in the tool's moving
parts and cause personal injury. Rubber gloves
and nonskid footwear are recommended when
working outdoors. Wear protective hair covering
to contain long hair and keep it from being drawn
into air vents or getting caught in rotating parts.
11. ALWAYS WEAR SAFETY GLASSES. Everyday
eyeglasses have only impact-resistant lenses;
they are NOT safety glasses.
18. DISCONNECT TOOLS. When not in use, before
servicing, or when changing attachments, blades,
bits, cutters, etc., all tools should be disconnected
from power supply.
19. REMOVE ADJUSTING KEYS AND WRENCHES.
Get in the habit of checking to see that keys and
adjusting wrenches are removed from the tool
before turning it on.
20. AVOID ACCIDENTAL STARTING. Don't carry
plugged-in tools with finger on switch. Be sure
the switch is off when plugging in.
21. 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 50 feet or less in length. A cord
exceeding 100 feet is not recommended. If in
doubt, use the next heavier gage. The smaller the
gage number, the heavier the cord.
22. OUTDOOR USE EXTENSION CORDS. When
tool is used outdoors, use only extension cords
suitable for use outdoors. Outdoor approved
cords are marked with the suffix W-A, for
example - SJTW-A or SJOW-A.
Page 4
RULES FOR SAFE OPERATION (Continued)
23. NEVER OPERATE GRINDER without using a
guard.
24. KEEP HANDS AWAY FROM GRINDING AREA.
25. NEVER USE IN AN EXPLOSIVE ATMO-
SPHERE. Normal sparking of the motor could
ignite fumes.
26. INSPECT TOOL CORDS PERIODICALLY and
if damaged, have repaired at your nearest
RYOBI FACTORY or AUTHORIZED SERVICE
CENTER. Stay constantly aware of cord
location.
27. INSPECT EXTENSION CORDS PERIODI-
CALLY and replace if damaged.
28. KEEP THE TOOL AND ITS HANDLE 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 strong solvents to clean your
tool.
31. 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 servicing, use
only identical Ryobi replacement parts.
35. POLARIZED PLUGS. To reduce the risk of
electric shock, this tool has a polarized plug (one
blade is wider than the other). This plug will fit in
a polarized outlet only one way. If the plug does
not fit fully in the outlet, reverse the plug. If it still
does not fit, contact a qualified electrician to
install the proper outlet. Do not change the plug
in any way.
29. STAY ALERT. Watch what you are doing and
use common sense. Do not operate tool when
you are tired. Do not rush.
30. 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 should be properly repaired or replaced
by an authorized service center unless indicated
elsewhere in this instruction manual.
Look for this symbol to point out important safety precautions.
It means attention!!! Your safety is involved.
36. NEVER USE A TOOL IF ITS COVER OR ANY
BOLTS ARE MISSING. If the cover or bolts
have been removed, replace them prior to use.
Maintain all parts in good working order.
37. ALWAYS TURN THE SWITCH OFF before
disconnecting grinder to avoid accidental starting.
38. ALL REPAIRS, WHETHER ELECTRICAL OR
MECHANICAL, should be made at a RYOBI
FACTORY or AUTHORIZED SERVICE
CENTER.
39. SAVE THESE INSTRUCTIONS. Review them
frequently and use them to instruct others who
may use this tool. If you loan someone this tool,
loan them these instructions also.
SAVE THESE INSTRUCTIONS
Page 5
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