Ryobi 6 Bench Manual

							OPERATOR’S MANUAL
MANUEL D’UTILISATION
MANUAL DEL OPERADOR
6 in. BENCH GRINDER
MEULEUSE D’ÉTABLI  
DE 152 mm (6 po)
ESMERILADORA DE BANCO  
DE 152 mm (6 pulg.)
BG612/BG612G
WARNING: To reduce the 
risk of injury, the user must read and understand the operator’s manual before using this product.
ADVERTENCIA: Para reducir 
el riesgo de lesiones, el usuario debe leer 
y comprender el manual del operador 
antes de usar este producto. 
AVERTISSEMENT : Pour réduire les risques de blessures, l’utilisateur doit lire et veiller à bien comprendre le manuel d’utilisation avant d’employer ce produit.  
TABLE OF CONTENTS
 General Safety Rules .......................2-3
 Specific Safety Rules ......................3-4
	Symbols ..............................................5
	Electrical .............................................6
	Features ..............................................7
	Assembly .........................................7-8
	Operation .........................................8-9
	Maintenance .....................................10
  Figures (Illustrations) ...................11-13
 Parts Ordering  
and Service .........................Back page
TABLE DES MATIÈRES
  Règles de sécurité générales ..........2-3
 Règles de sécurité particulières ......3-4
	Symboles ............................................5
	Caractéristiques électriques ...............6
	Caractéristiques .................................7
	Assemblage .....................................7-8
	Utilisation .........................................8-9
	Entretien  ...........................................10
  Figures (illustrations) ....................11-13
 Commande de pièces  
et dépannage ....................Page arrière
ÍNDICE DE CONTENIDO
  Reglas de seguridad generales .......2-3
 Reglas de seguridad específicas ....3-4
	Símbolos ............................................5
	Aspectos eléctricos ............................6
	Características ...................................7
	Armado ............................................7-8
	Funcionamiento ...............................8-9
	Mantenimiento ..................................10
  Figuras (illustraciones) .................11-13
 Pedidos de piezas  
y servicio .......................Pág. posterior
SAVE THIS MANUAL FOR 
FUTURE REFERENCE
CONSERVER CE MANUEL 
POUR FUTURE RÉFÉRENCE
GUARDE ESTE MANUAL 
PARA FUTURAS CONSULTAS      
						

							2 − English
GENERAL SAFETY RULES
 WARNING
Read and understand all instructions. Failure to follow 
all instructions listed below, may result in electric shock, 
fire and/or serious personal injury. 
READ ALL INSTRUCTIONS
	KNOW YOUR POWER TOOL. Read the operator’s 
manual carefully. Learn the grinder’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. Form 
the habit of checking to see that keys and adjusting 
wrenches are removed from tool before turning it on.
	KEEP WORK AREA CLEAN. Cluttered areas and 
benches invite accidents. DO NOT leave tools or pieces 
of wood on the bench grinder while it is in operation.
	DO NOT USE IN DANGEROUS ENVIRONMENTS. Do 
not use power tools in damp or wet locations or expose 
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 CHILDPROOF with padlocks and 
master switches, or by removing starter keys.
	DON’T FORCE TOOL. It will do the job better and safer 
at the feed rate for which it was designed.
	USE RIGHT TOOL. Don’t 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. Use only a 
cord 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 
gauge size (A.W.G.) of at least 16 is recommended for an 
extension cord 25 feet or less in length. If in doubt, use 
the next heavier gauge. The smaller the gauge number, 
the heavier the cord.
	DRESS PROPERLY. Do not wear loose clothing, gloves, 
neckties, or jewelry. They can get caught and draw you 
into moving parts. Also wear protective hair covering to 
contain long hair.
	ALWAYS WEAR SAFETY GLASSES WITH SIDE 
SHIELDS. Everyday eyeglasses have only impact-
resistant lenses, they are not safety glasses.
	SECURE WORK. Use clamps or a vise to hold work when 
practical. It’s safer than using your hand and frees both 
hands to operate tool.
	DON’T 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 TOOLS. When not in use, before servicing, 
or when changing attachments, blades, bits, cutters, etc., 
all tools should be disconnected.
	AVOID ACCIDENTAL STARTING. Be sure switch is off 
when plugging in any tool.
	USE RECOMMENDED ACCESSORIES. Consult the 
operator’s manual for recommended accessories. The 
use of improper accessories may risk injury.
	NEVER STAND ON TOOL. Serious injury could occur if 
the tool is tipped or if the cutting tool 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. 
	PROTECT YOUR LUNGS. Wear a face or dust mask if 
the grinding operation is dusty.
	PROTECT YOUR HEARING. Wear hearing protection 
during extended periods of operation.
	DO NOT ABUSE CORD. Never yank cord to disconnect 
from receptacle. Keep cord away from heat, oil, and sharp 
edges.
	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.
	WHEELS COASTS AFTER BEING TURNED OFF.
	NEVER USE IN AN EXPLOSIVE ATMOSPHERE. Normal 
sparking of the motor could ignite fumes.
	DO NOT USE TOOL IF SWITCH DOES NOT TURN IT 
ON AND OFF. Have defective switches replaced by an 
authorized service center. 
						

							3 − English
GENERAL SAFETY RULES
	INSPECT TOOL CORDS PERIODICALLY. If damaged, 
have repaired by a qualified service technician at an 
authorized service facility. 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. Repair or replace a damaged 
or worn cord immediately. Stay constantly aware of cord 
location and keep it well away from the rotating grinding 
wheels.
	INSPECT EXTENSION CORDS PERIODICALLY and 
replace if damaged.
	USE ONLY CORRECT WHEELS. DO NOT use wheels 
with incorrect size holes. Never use wheel washers or 
wheel bolts that are defective or incorrect. The maximum 
wheel capacity of your grinder is 6 in. 
	NEVER TOUCH WHEEL or other moving parts during 
use.
	NEVER START A TOOL WHEN ANY ROTATiNG 
COMPONENT IS IN CONTACT WITH THE WORKPIECE.
	DO NOT OPERATE A TOOL WHILE UNDER THE 
INFLUENCE OF DRUGS, ALCOHOL, OR ANY 
MEDICATION.
	WHEN SERVICING  use only identical replacement parts. 
Use of any other parts may create a hazard or cause 
product damage.
	USE ONLY RECOMMENDED ACCESSORIES listed 
in this manual or addendums. Use of accessories that 
are not listed may cause the risk of personal injury. 
Instructions for safe use of accessories are included with 
the accessory. 
	DOUBLE CHECK ALL SETUPS. Make sure blade is tight 
and not making contact with saw or workpiece before 
connecting to power supply.
	GROUND ALL TOOLS. If tool is equipped with three-
prong plug, it should be plugged into a three-hole 
electrical receptacle.
	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.
	USE ONLY CORRECT ELECTRICAL DEVICES: 3-wire 
extension cords that have 3-prong grounding plugs and 
3-pole receptacles that accept the tool’s plug.
	DO NOT MODIFY the plug provided. If it will not fit the 
outlet, have the proper outlet installed by a qualified 
electrician.
	FIRMLY BOLT THE GRINDER TO A WORK BENCH OR 
LEG STAND at approximately hip height.
	NEVER reach to pick up a workpiece, a piece of scrap, 
or anything else that is in or near the grinding 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.
	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 grinder from the power supply and securely retighten 
the wheel nut.
	USE ONLY FLANGES furnished with this bench grinder. 
	IF ANY PART OF THIS GRINDER 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.
	DO NOT OVERTIGHTEN THE WHEEL NUT. Excessive 
tightening can cause the wheel to crack during operation.
	ALWAYS USE THE GRINDER’S WHEEL GUARDS AND 
SAFETY SHIELDS.
	INSPECT GRINDING WHEEL for visible defects. 
Check the wheel for fissures and cracks, and test for 
normal operation prior to use. Replace cracked wheel 
immediately.
	ADJUST distance between wheel and work rest to main- 
tain 1/16 in. or less separation as the diameter of the 
wheel decreases with use. The value of separation used 
in the marking is to be the separation recommended by 
the manufacturer but shall not be more than 1/8 in.
	ALWAYS EASE THE WORKPIECE AGAINST THE 
ABRASIVE WHEEL when starting to grind. A harsh  
impact can break the wheel. Use light pressure when 
starting to grind; too much pressure on a cold wheel can 
cause the wheel to crack.
	RISK OF INJURY DUE TO ACCIDENTAL STARTING. 
Do not use in an area where children may be present.
	NEVER START THE GRINDER when the wheel is in 
contact with the workpiece.
	SECURE WORK. Always hold workpiece firmly against 
the work rest.
SPECIFIC SAFETY RULES 
						

							4 − English
SPECIFIC SAFETY RULES
	DO NOT USE THE BENCH GRINDER if the flange nut 
or clamp nut is missing or if the spindle shaft is bent.
	FREQUENTLY clean grinding dust from beneath grinder.
	SECURE LONG HAIR so it is above shoulder level to 
prevent entanglement in any rotating parts.
	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.
	DO NOT TOUCH the cut material until it cools or you can 
be burned.
	IF THE POWER SUPPLY CORD IS DAMAGED, it must 
be replaced only by the manufacturer or by an authorized 
service center to avoid risk.
	MAKE SURE THE GRINDER IS SECURELY MOUNTED 
as described in the assembly instructions before 
connecting the tool to a power supply.
	SAVE THESE INSTRUCTIONS. Refer to them frequently 
and use to instruct other users. If you loan someone this 
tool, loan them these instructions also.
CALIFORNIA PROPOSITION 65
WARNING: 
This product and some dust created by power sanding, sawing, grinding, drilling, and other construction activities may 
contain chemicals, including lead, known to the State of California to cause cancer, birth defects, or other reproductive 
harm. Wash hands after handling.
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 exposure to these chemicals varies, depending on how often you do this type of work. To reduce your 
exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially 
designed to filter out microscopic particles.  
						

							5 − English
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOLSIGNALMEANING
DANGER:Indicates an imminently hazardous situation, which, if not avoided, will result 
in death or serious injury.
WARNING:Indicates a potentially hazardous situation, which, if not avoided, could result 
in death or serious injury.
CAUTION:Indicates a potentially hazardous situation, which, if not avoided, may result in 
minor or moderate injury. 
NOTICE:(Without Safety Alert Symbol) Indicates important information not related to an 
injury hazard, such as a situation that may result in property damage.
Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper 
interpretation of these symbols will allow you to operate the product better and safer.
SYMBOLNAMEDESIGNATION/EXPLANATION
Safety AlertIndicates a potential personal injury hazard.
Read Operator’s ManualTo reduce the risk of injury, user must read and understand operator’s 
manual before using this product.
Eye ProtectionAlways wear eye protection with side shields marked to comply 
with ANSI Z87.1.
Wet Conditions AlertDo not expose to rain or use in damp locations.
No Hands SymbolFailure to keep your hands away from the blade will result in serious 
personal injury.
Hot SurfaceTo reduce the risk of injury or damage, avoid contact with any hot 
surface.
VVoltsVoltage
AAmperesCurrent
HzHertzFrequency (cycles per second)
WWattPower
minMinutesTime
Alternating CurrentType of current
noNo Load SpeedRotational speed, at no load
.../minPer MinuteRevolutions, strokes, surface speed, orbits etc., per minute 
						

							6 − English
ELECTRICAL
EXTENSION CORDS
Use only 3-wire extension cords that have 3-prong grounding 
plugs and 3-pole receptacles that accept the product’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 product 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.
**Ampere rating (on product 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  —
**Used on 12 gauge - 20 amp circuit.NOTE: AWG = American Wire Gauge
When working with the product outdoors, use an extension 
cord that is designed for outside use. This is indicated by 
the letters “W-A” or “W” on the cord’s jacket. 
Before using an extension cord, inspect it for loose or 
exposed wires and cut or worn insulation.
WARNING: 
Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on lumber, 
tools, or other obstructions while you are working with a 
power tool. Failure to do so can result in serious personal 
injury.
WARNING: 
Check extension cords before each use. If damaged 
replace immediately. Never use the product with a 
damaged cord since touching the damaged area could 
cause electrical shock resulting in serious injury.
ELECTRICAL CONNECTION
This product is powered by a precision-built electric motor. 
It should be connected to a power supply that is 120 V, AC 
only (normal household current), 60 Hz. Do not operate this 
product on direct current (DC). A substantial voltage drop 
will cause a loss of power and the motor will overheat. If 
the product does not operate when plugged into an outlet, 
double check the power supply.
SPEED AND WIRING
The no-load speed of this product is approximately 3,600 
rpm. This speed is not constant and decreases under a load 
or with lower voltage. For voltage, the wiring in a shop is as 
important as the motor’s horsepower rating. A line intended 
only for lights cannot properly carry a power tool motor. Wire 
that is heavy enough for a short distance will be too light for 
a greater distance. A line that can support one power tool 
may not be able to support two or three products.
GROUNDING INSTRUCTIONS
See Figure 1, page 11.
This product must be grounded. 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 product is equipped with an 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. 
WARNING: 
Improper connection of the grounding plug can result in a 
risk of electric shock. When repair or replacement of the 
cord is required, do not connect the grounding wire to 
either flat blade terminal. The wire with insulation having 
an outer surface that is green with or without yellow 
stripes is the grounding wire.
Check with a qualified electrician or service personnel if the 
grounding instructions are not completely understood, or if 
in doubt as to whether the product is properly grounded.
Repair or replace a damaged or worn cord immediately.
This product is for use on a nominal 120 V circuit and has 
a grounding plug similar to the plug illustrated in figure 1, 
page 11. Only connect the product to an outlet having the 
same configuration as the plug. Do not use an adapter with 
this product. 
						

							7 − English
ASSEMBLY
UNPACKING
This product requires assembly.
	Carefully remove the product and any accessories from 
the box. Make sure that all items listed in the packing list 
are included.
WARNING: 
Do not use this product if it is not completely assembled 
or if any parts appear to be missing or damaged. Use of 
a product that is not properly and completely assembled 
could result in serious personal injury.
 Inspect the tool carefully to make sure no breakage or 
damage occurred during shipping.
 Do not discard the packing material until you have 
carefully inspected and satisfactorily operated the tool.
 If any parts are damaged or missing, please call 
1-800-525-2579 for assistance.
WARNING: 
If any parts are damaged or missing do not operate this 
product until the parts are replaced. Use of this product 
with damaged or missing parts could result in 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 
hazardous condition leading to possible serious personal 
injury.
WARNING: 
Do not connect to power supply until assembly is 
complete. Failure to comply could result in accidental 
starting and possible serious personal injury.
WARNING: 
Always spin the wheel by hand before turning on the 
grinder to make sure the spark deflector doesn’t hit the 
grinding wheel.
TOOLS NEEDED
See Figure 2, page 11.
The following tools (not included or drawn to scale) are 
needed for assembly:
 Adjustable Wrench
 Phillips Screwdriver
LOOSE PARTS LIST
See Figure 3, page 11.
The following items are included with the tool:
  Screw ........................................................................\
.4
 Washer .......................................................................4
  Lock washer ...............................................................4
 Spark shield ...............................................................1
 Carriage bolt ...............................................................2
  Work rest knob ...........................................................2
 Left work rest .............................................................1
  Right work rest ...........................................................1
 Spark shield with magnifier ........................................1
 Spark Deflector with LED ...........................................2
 Spacer ........................................................................\
1
 Batteries (AAA) ...........................................................4
ATTACHING SPARK SHIELD TO SPARK 
DEFLECTOR WITH LED
See Figure 4, page 12.
 Hold the bolt and rotate the spark shield knob 
counterclockwise to loosen.
 Remove the bolt and spark shield knob.
 Place spark shield onto spark deflector with LED 
assembly. Align the holes in the spark shield with the 
holes in the spark deflector with LED assembly.
FEATURES
PRODUCT SPECIFICATIONS
Wheel Diameter ............................................................6 in.
Wheel Thickness .......................................................3/4 in.
Arbor Hole .................................................................1/2 in.
No Load Speed .....................................3,600 r/min. (RPM)
Input ...................................................120 V~, 2.1 A, 60 Hz 
						

							8 − English
ASSEMBLY
 Install bolt through the holes in the spark deflector with 
LED assembly and spark shield.
 NOTE: Orient the bolt so that the head of the bolt sits in 
the recessed area of the spark shield.
 Reinstall spark shield knob onto the bolt. Tighten securely.
MOUNTING SPARK SHIELD ASSEMBLY
See Figure 5, page 12.
 Attach the spark shield assembly to the wheel guard using 
two screws, washers, and lock washers.
 Tighten screw securely.
 Repeat above steps for the second spark shield assembly.
 NOTE: The spark shield assemblies can be installed 
on either side of the tool. For detailed grinding, it’s 
recommended to place the spark shield with magnifier 
on the right side above the finer wheel.
MOUNTING WORK RESTS
See Figure 6, page 12.
 Unscrew and remove the work rest knob from the carriage 
bolt.
 Attach the right work rest to the inside of the wheel guard 
as shown.
 NOTE: As the diameter of the wheel decreases with use, 
adjust the distance between the wheel and the right work 
rest to maintain 1/16 in. or less separation.
 Tighten work rest knob securely.
 Repeat above steps for the left work rest.
INSTALLING/REMOVING BATTERIES
See Figure 7, page 12.
Always turn the on/off switch to the OFF position when 
installing batteries.
 Remove battery covers from the spark shield assemblies.
 Install AAA batteries according to the polarity indicators 
(+ or -) inside the battery compartments.
 Replace and secure the battery covers.
MOUNTING GRINDER TO WORKBENCH
See Figure 8, page 12.
The bench grinder must be mounted to a firm supporting 
surface such as a workbench or leg stand. Four bolt holes 
have been provided in the tool’s base for this purpose. Each 
of the four mounting holes should be bolted securely using 
machine bolts, lock washers, and hex nuts (not included). 
Bolts should be of sufficient length to accommodate the 
saw base, lock washers, hex nuts, and the thickness of the 
workbench. Tighten all four bolts securely.
Carefully check the workbench after mounting to make 
sure that no movement can occur during use. If any tipping, 
sliding, or walking is noted, secure the workbench to the 
floor before operating.
WARNING: 
Always make sure your bench grinder is securely 
mounted to a workbench. Failure to do so could result in 
an accident resulting in possible serious personal injury.
OPERATION
WARNING: 
Do not allow familiarity with tools to make you careless. 
Remember that a careless fraction of a second is 
sufficient to inflict serious injury.
WARNING: 
Always wear eye protection with side shields marked to 
comply with ANSI Z87.1. Failure to do so could result in 
objects being thrown into your eyes, resulting in possible 
serious injury.
WARNING: 
Do not use any attachments or accessories not 
recommended by the manufacturer of this tool. The use 
of attachments or accessories not recommended can 
result in serious personal injury.
CAUTION: 
Excessive pressure on a cold wheel may cause the wheel 
to crack.
NOTICE: 
Never sharpen or grind anything made of aluminum, 
brass, or copper. 
						

							9 − English
ON/OFF SWITCH
See Figure 10, page 12.
The bench grinder features a front access on/off switch for 
convenience and safety. 
SHARPENING TWIST DRILL BITS
See Figure 11, page 13.
Drill bits are best sharpened on a sharpening jig (available at 
most hardware stores). Begin on one side of the point at the 
existing angle, then twist the bit while maintaining contact 
with the grinding surface. Sharpen only the tip.
This technique requires considerable practice, so take your 
time and make a few “dry runs” first with the grinder off. Be 
sure to maintain the original cutting edge angle as this is 
important to the efficiency of your bits.
SHARPENING LAWN MOWER BLADES
See Figure 12, page 13.
Lawn mower blades are usually sharpened on only one edge 
and dressed up slightly on the other. Perform this sharpening 
process on both cutting ends of the blade. After sharpening, 
be sure to balance the blade by removing additional material.
NOTICE: 
An unbalanced lawn mower blade may cause excessive 
vibration which will damage the lawn mower.
SHARPENING CHISELS AND SCREWDRIVER 
BLADES
See Figure 13, page 13.
When sharpening chisels and screwdrivers, work rest should 
support the chisel at the correct angle against the wheel.
OPERATION
WARNING: 
Do not use wheels rated less than the speed of this tool. 
Failure to heed this warning could result in personal injury.
APPLICATIONS
This product has been designed only for the purposes listed 
below:
 Sharpening drill bits
 Sharpening lawn mower blades
 Sharpening chisels and flat screwdrivers
LED LIGHT SWITCH
See Figure 9, page 12.
Use the LED light switch on top of the spark shield assembly 
to turn the lights on and off. 
BASIC OPERATION
To be efficient and work as designed, your tools should be 
kept sharp. Dull tools can and will cause accidents. 
Bench grinders are ideal for sharpening tools such as chisels, 
scissors, etc., and for removing rust or corrosion. Grinders 
remove material rapidly so pressure is the key to efficient 
grinding. 
The proper way to sharpen a tool and avoid overheating is:
 Keep the object in constant motion, moving it at an even 
pace.
 Never force a tool against the grinding wheel.
 Keep the tool cool by using a pan of water. 
 The grinding wheel should rotate “into” the object being 
sharpened.
NOTE: Excessive pressure may damage the tool, cause 
the motor to overheat, and prematurely wear down the 
grinding wheel. 
						

							10 − English
WARNING: 
When servicing, use only identical replacement parts. 
Use of any other parts could create a hazard or cause 
product damage.
WARNING: 
Always wear eye protection with side shields marked to 
comply with ANSI Z87.1. Failure to do so could result in 
objects being thrown into your eyes resulting in possible 
serious injury.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most 
plastics are susceptible to damage from various types of 
commercial solvents and may be damaged by their use. Use 
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING: 
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact 
with plastic parts. Chemicals can damage, weaken or 
destroy plastic which could result in serious personal 
injury.
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.
NOTE: FIGURES (ILLUSTRATIONS) START ON PAGE 10 AFTER 
FRENCH AND SPANISH LANGUAGE SECTIONS.
This product has a Three-year Limited Warranty.
For Warranty details go to
www.ryobitools.com
MAINTENANCE
POWER SUPPLY CORD REPLACEMENT
If replacement of the power supply cord is necessary, this 
must be done by an authorized service center in order to 
avoid a safety hazard.
WHEEL REPLACEMENT
See Figure 14, page 13.
If you must replace a grinding wheel, be sure to obtain one 
with a safe rated speed at least as high as the “no load 
speed” RPM marked on the data plate of the grinder and 
which is marked to comply with ANSI B7.1.
To replace the grinding wheel:
 Unplug the grinder.
 Remove the flange nuts and screws securing the wheel 
guard cover.
 Remove the wheel guard cover.
 Loosen the wheel nut in a clockwise direction for the left 
side and a counterclockwise direction for the right side.
 Remove the outer flange and grinding wheel.
 To install a new grinding wheel, reverse the above 
procedure.
 NOTE: Be sure the grinding wheel and outer flange are 
properly seated on the spindle shaft.
INSTALLING WIRE WHEEL (NOT INCLUDED)
See Figure 15, page 13.
When replacing the grinding wheel with a wire wheel, it is 
necessary to place a spacer on the spindle shaft BEFORE 
installing the inner flange, wheel, outer flange, and wheel nut.