OPERATOR`S MANUAL 4 in. (100 mm) Angle Grinder
Contents
1. 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 operator s manual and review frequently for continuing safe operation and instructing others who may use this tool Page 10 OPERATION A CAUTION Never cover air vents They must always be open for proper motor cooling SWITCH BUTTON See Figure 7 To turn your grinder on push the switch button forward Release the button to turn the grinder off LOCK ON FEATURE See Figure 7 Your grinder has a lock on feature that is convenient when continuous operation for extended periods of time is required To lock on push the switch button forward and press the front portion of the button in toward the grinder To release the lock on press in on the rear portion of the button Button will then disengage from the locked position GRINDING See Figure 8 Always carefully select and use grinding wheels that are recommended for the material to be ground Make sure that the minimum operating speed of the grinding wheel selected is notless than 11 000 rpm The grinding wheel provided with your grinder is suitable for grinding welds preparing sur faces to be welded grinding structural steel and grinding stainless steel Secure all work before beginning a grinding opera2. guard protects operator from broken wheel fragments Accessories must be rated for at least the speed recommended on the tool warning label Wheels and other accessories running over rated speed can fly apart and cause injury Hold tool by insulated gripping surfaces when per forming an operation where the tool may contact hidden wiring or its own cord Contact with a live wire will make exposed metal parts of the tool live and shock the operator Grinding wheel and guard must be securely attached as described in this operating manual before connecting the grinder to a power source Grinding wheels must be stored in a dry place Before attaching the grinding wheel inspect it for visible defects If cracked chipped or warped do not install it Do not overtighten the clamp nut on the grinding wheel Excessive tightening can cause the wheel to crack during operation Make sure that the guard is in good condition and securely installed before operating grinder Do not clamp the grinder in a vise or use as a fixed grinder Never turn on the grinder with the grinding wheel or any rotating parts touching the workpiece Use only grinding wheels in compliance with ANSI standard B7 1 and rated greater than 11 000 RPM Do not use the grinder if the disc flange or clamp nut is missing or if the spindle is bent Always hold the grinder securely with two hands while working and at all times when it is running Never cover the air ve
3. or any medication Following this rule will reduce the risk of electric shock fire or serious injury Keep hands away from grinding area Following this rule will reduce the risk of serious personal injury Save these instructions Refer to them frequently and use them to instruct others who may use this tool If you loan someone this tool loan them these instruc tions also A 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 e 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 SAVE THESE INSTRUCTIONS SAFETY AND INTERNATIONAL SYMBOLS This operator s manual describes safety and international symbols and pictographs that may appear on this product Read the operator s manual for complete safety assembly operating and maintenance and repair information MEANING Do not expose to rain or use in damp locations Page 5 SYMBOLS Importa
4. ICE CENTER for repair When servicing use only identical Ryobi replacement parts A 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 operator s manual and review frequently for continuing safe operation and instructing others who may use this tool The operation of any angle grinder 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 Always wear eye protection which is marked to comply with ANSI Z87 1 Page 2 RULES FOR SAFE OPERATION A WARNING Read and understand all instructions Failure to follow all instructions listed below may result in elec tric shock fire and or serious personal injury SAVE THESE INSTRUCTIONS Work Area Keep your work area clean and well lit Cluttered benches and dark areas invite accidents Do not operate power tools in explosive atmo spheres such as in the presence of flammable liquids gases or dust Power tools create sparks which may ignite the dust or fumes Keep bystanders c
5. RYOBI OPERATOR S MANUAL 4in 100 mm Angle Grinder Model AG401 Double Insulated SPECIFICATIONS Grinding Wheel Capacity 4 in 100 mm Rating 120 V c a 60Hz No Load Speed 11 000 RPM Amperes 4 4 A Net Weight 4 0 Ibs 1 8 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 A CAUTION Carefully read through this entire operator 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 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 Prod ct Specifications scicesscccsizsschcgeseanetaveved ee WMA ORC OU iiisiiiieoi ninini aieia ainen ae eka Rules for Safe Operaton sssnessoeenssneernreeeresrreeene SYMDOIS ssa ane ee ere n ere ee E eee ere ee ee Electrical and Unpacking seese FeatUrES niner E E E ASSEMDIY iope issn rai REA yo USS ag aicea Operati Deer eee oan eee an a ee ne eee eee ee PUTA ANC iesise e aaa AE Parts Ordering SCrviCe cccccccccssss
6. and 9 then retighten clamp screw securely Never use your grinder without the guard in place and properly adjusted See Figures 4 5 and 6 Note Be sure the tabs on the guard are seated in the groove in the bearing cap If you are replacing the guard loosen the clamp screw until the guard can be removed from the bearing cap Place the new guard on the shoulder of the bearing cap See Figure 9 Note If the new guard will not fit loosen the clamp screw until the guard slides over the bearing cap Rotate guard to the correct position as shown in figures 4 5 and 6 Tighten clamp screw securely Note Be sure the tabs on the guard are seated in the groove in the bearing cap Reassemble disc flange grinding wheel and clamp nut Refer to INSTALLING THE GRINDING WHEEL in structions on page 9 Depress the spindle lock button and rotate the wheel clockwise until the spindle locks in position Securely tighten the clamp nut with the wrench provided Page 12 TO TIGHTEN WRENCH CLAMP NUT TO LOOSEN 7 GRINDING DISC FLANGE CLAMP SCREW SPINDLE BEARING CAP FLAT S SPINDLE LOCK BUTTON Fig 9 MAINTENANCE GENERAL Avoid using solvents when cleaning plastic parts Most plastics A WARNING are susceptible to damage from various types of commercial Always wear safety goggles or safety glasses with side solvents and may be damaged by their use Use clean cloths shields during power tool operati
7. angerous and must be repaired Disconnect the plug from the power source be fore making any adjustments changing acces sories or storing the tool Such preventive safety measures reduce risk of starting the tool acciden tally Store idle tools out of reach of children and other untrained persons Tools are dangerous in the hands of untrained users Maintain tools with care Keep cutting tools sharp and clean Properly maintained tools with sharp cutting edges are less likely to bind and are easier to control Check for misalignment or binding of moving parts breakage of parts and any other condi tion that may affect the tool s operation If dam aged have the tool serviced before using Many accidents are caused by poorly maintained tools RULES FOR SAFE OPERATION Use only accessories that are recommended by the manufacturer for your model Accessories that may be suitable for one tool may become hazardous when used on another tool Service Tool service must be performed only by qualified repair personnel Service or maintenance performed by unqualified personnel could result in a risk of injury When servicing a tool use only identical replace ment parts Follow instructions in the Maintenance section of this manual Use of unauthorized parts or failure to follow Maintenance Instructions may create a risk of electric shock or injury Specific Safety Rules for Grinders Always use proper guard with grinding wheel A
8. ause of concentration of pressure on a small area Use just enough pressure to keep the grinder from chattering or bouncing Heavy pressure will decrease its speed and put a strain on the motor Normally the weight of the tool alone is adequate for most grinding jobs Use light pressure when grinding jagged edges or loose bolts where there is the potential for the grinder to snag on the metal edge Lift the grinder away from the workpiece before turning your grinder off Page 11 MAINTENANCE A WARNING When servicing use only identical Ryobi replacement parts Use of any other parts may create a hazard or cause product damage GUARD REPLACEMENT See Figure 9 After extended use the guard may become worn and need adjustments or replacing If you drop your grinder and damage the guard it may also be necessary for you to replace it PROCEED AS FOLLOWS WHEN REPLACEMENT IS REQUIRED UNPLUG YOUR GRINDER A WARNING Failure to unplug your grinder could result in accidental starting causing serious injury Remove and reassemble parts as shown in figure 9 Depress spindle lock button and rotate clamp nut until spindle locks Using the wrench provided loosen and remove clamp nut from spindle Remove grinding wheel and disc flange Using a screwdriver loosen 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 figures 4 5
9. ee 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 Guard A protective guard has been provided on your grinder It deflects sparks and metal chips during use Heavy Duty Motor Your Ryobi Angle Grinder has a powerful motor with sufficient power to handle tough grinding jobs that require heavy duty Side Handle The side handle provided stabilizes your grinder and must e 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 Spindle Lock Button The spindle lock button secures the spindle so that only one wrench is needed to change the grinding wheel Switch Button Your grinder has a conveniently located 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 APPLICATIONS Use only for the purposes listed below Grinding metals Preparing surfaces to be welded Grinding welds SWITCH BUTTON SPINDLE LOCK BUTTON performance N me e gt WH TS o GRINDING WHEEL GUARD A WARNING Do not allow familiarity with your grinder to make you careless Remember that a careless fraction of asecond is sufficient to inflict severe i
10. er against the disc flange as shown in figure 3 Failure to do so will cause the grinding wheel to crack when tightening the clamp nut This could result in serious personal injury because of loose particles breaking off and being thrown from the grinder Never use a grinding wheel with a mounting hole larger than 5 8 Do not overtighten Page 9 HOUSING HANDLE T O TIGHTEN WRENCH CLAMP TO 5 NUT LOOSEN GRINDING WHEEL FLANGE me LOCK BUTTON Thread the clamp nut on the spindle with the flat side of the nut facing up Fit the raised small diameter portion of the clamp nut into the hole in the grinding wheel and finger tighten Depress the spindle lock button and rotate the wheel clockwise until the spindle locks in position Securely tighten the clamp nut with the wrench provided Do not overtighten ADJUSTMENTS A WARNING Before connecting your grinder to power supply always check to be sure switch is not in lock on position Failure to do so could result in accidental starting of your grinder resulting in possible serious injury GUARD LOCATION The guard on your grinder should be correctly installed depending on which side the handle is mounted Never use your grinder without the guard correctly in place Figures 4 5 and 6 show correct and incorrect locations of the guard CORRECT A WARNING Never place the guard so that it is on front of the grinder as shown in figure 6 T
11. er 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 Following this rule will reduce the risk of electric shock fire or serious injury Do not abuse cord Never carry tool by cord or yank it to disconnect from receptacle Keep cord from heat oil and sharp edges Following this rule will reduce the risk of electric shock or fire Make sure your extension cord is in good condi tion When using an extension cord be sure to use one heavy enough to carry the current your product will draw A wire gage size A W G of at least 16 is recommended for an extension cord 100 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 An undersized cord will cause a drop in line voltage resulting in loss of power and overheating RULES FOR SAFE OPERATION Inspect for and remove all foreign objects from workpiece before grinding Following this rule will reduce the risk of serious personal injury Drugs Alcohol Medication Do not operate tool while under the influence of drugs alcohol
12. hildren and visitors away while operating a power tool Distractions can cause you to lose control Electrical Safety Double insulated tools are equipped with a po larized 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 a polarized outlet Do not change the plug in any way Double insu lation o eliminates the need for the three wire grounded power cord and grounded power supply system Avoid body contact with grounded surfaces such as pipes radiators ranges and refrigerators There is an increased risk of electric shock if your body is grounded Don t expose power tools to rain or wet condi tions Water entering a power tool will increase the risk of electric shock Do not abuse the cord Never use the cord to carry the tools or pull the plug from an outlet Keep cord away from heat oil sharp edges or moving parts Replace damaged cords immedi ately Damaged cords increase the risk of electric shock When operating a power tool outside use an out door extension cord marked W A or W These cords are rated for outdoor use and reduce the risk of electric shock Personal Safety Stay alert watch what you are doing and use common sense when operating a power tool Do not use tool while tired or under the influence of drugs alcohol
13. his could result in serious injury because sparks and loose particles thrown from the grinding wheel would be directed toward the operator Always place the guard in the correct location as shown in figures 4 and 5 OPERATION A WARNING Always wear safety glasses and keep guard in place when grinding Hot metal sparks 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 lightly tap all around the wheel carefully listening to the resulting sounds 3 Any places with fissures or cracks will result in a different sound Do not use a wheel containing fissures or cracks When installing a new grinding wheel a no load revolution test of approximately one minute must be carried out with the grinding wheel facing a safe direction i e away from people or objects Ad DANGER Never attach a wood cutting or carving blade of any type to this angle grinder It is only designed for grinding metal Use for any other purpose is not recommended and creates a hazard which will result in serious injury LOCATION OF GUARD IS BETWEEN POINTS A AND B INCORRECT LOCATION OF GUARD
14. hold current Do not operate this tool on direct current DC A substantial voltage drop will cause aloss of power and the motor will overheat If your tool does not operate when plugged into an outlet double check the power supply AXCAUTION Keep the cord away from the cutting area and position the cord so that it will not be caught on lumber tools or other objects during cutting UNPACKING With the exception of the side handle and grinding wheel your angle grinder has been shipped completely assembled Carefully remove the grinder and accessories from the box Make sure that all items listed in the packing list are included Inspect grinder carefully to make sure no breakage or damage has occurred during shipping If any parts are damaged or missing contact your nearest Ryobi dealer to obtain replacement parts before attempting to operate grinder Do not discard the packing material until you have carefully inspected and satisfactorily operated grinder PACKING LIST Angle Grinder With Guard Grinding Wheel Side Handle Wrench Operator s Manual Warranty Registration Card AY WARNING If any parts are missing do not operate your grinder until the missing parts are replaced Failure to do so could result in possible serious personal injury Page 7 FEATURES KNOW YOUR ANGLE GRINDER Before attempting to use your grinder familiarize yourself with all operating features and safety requirements S
15. njury SIDE HANDLE WRENCH Page 8 ASSEMBLY A WARNING Your grinder should never be connected to power supply when you are assembling parts making adjustments installing or removing grinding wheels or when notin use Disconnecting your grinder will prevent accidental starting that could cause serious injury INSTALLING THE SIDE HANDLE See Figure 2 UNPLUG YOUR GRINDER AY WARNING Failure to unplug your grinder could result in accidental starting causing serious injury Install the side handle by screwing it into the side of the gear housing Note The handle can be installed on either the left or right side of the grinder depending on operator prefer ence It must always be used to prevent loss of control and possible serious injury Tighten side handle securely INSTALLING THE GRINDING WHEEL See Figure 3 UNPLUG YOUR GRINDER Ay WARNING Failure to unplug your grinder could result in accidental starting causing serious injury Your grinder is shipped with the disc flange and 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 the bottom of disc flange are engaged with flats on spindle Place the grinding wheel over the spindle with the concave side of the wheel facing up A WARNING Always install grinding wheel with the depressed cent
16. nt Some of the following symbols may be used on your tool Please study them and learn their meaning Proper interpretation of these symbols will allow you to operate the tool better and safer SYMBOL NAME DESIGNATION EXPLANATION votage Type or a characteristic of current No Load Speed Rotational speed at no load Revolutions or Reciprocation Per Minute Revolutions strokes surface speed orbits etc per minute Safety Alert Symbol Indicates danger warning or caution It means attention Your safety is involved SAVE THESE INSTRUCTIONS Lightning Alert Symbol The lightning flash with arrow head within a triangle is intended to tell the user that parts inside the product are a risk of electric shock to persons 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 l WARNING Failure to obey a safety warning can re
17. nts in the motor housing with your hands while operating the grinder Hold the tool away from your body while it is running Keep your hands away from the abrasive attachments Page 4 Dust and waste materials should not be allowed to build up in the workshop Hot metal sparks could start a fire Do not enlarge or alter the center hole of the grinding wheel as this could result in breaking it Use only the normal grinder surface Never use the side or upper surfaces for cutting 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 Additional Rules for Safe Operation Know your power tool Read operator s manual care fully Learn its applications and limitations as well as the specific potential hazards related to this tool Fol lowing this rule will reduce the risk of electric shock fire or serious injury Always wear safety glasses with side shields Ev eryday eyeglasses have only impact resistant lenses they are NOT safety glasses Protect your lungs Wear a face or dust mask if the operation is dusty Protect your hearing Wear hearing protection during extended periods of operation Inspect tool cords periodically and if damaged have repaired at your nearest authorized service center Stay constantly aware of cord location Check damaged parts Before furth
18. on 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 other obstructions while you are working with a power tool Used on 12 gauge 20 amp circuit e 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 e MODEL NO The model number of your tool will be found on a plate attached to the motor housing Please record the model number and serial number in the space provided below MODEL NUMBER AG401 SERIAL NUMBER RYOBI TECHNOLOGIES INC 1428 Pearman Dairy Road Anderson SC 29625 Post Office Box 1207 Anderson SC 29622 Phone 1 800 525 2579 www ryobitools com 983000 031 5 05
19. on or when blowing dust to remove dirt carbon dust etc A WARNING Do not at any time let brake fluids gasoline petroleum based products penetrating oils etc come in contact with plastic parts They contain chemicals that can damage weaken or destroy plastic A 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 If operation is dusty also wear a dust mask 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 Page 13 RYOBI OPERATOR S MANUAL 4 in 100 mm Angle Grinder Model AG401 Double Insulated 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 extensi
20. or medication A moment Page 3 of inattention while operating power tools may result in serious personal injury Dress properly Do not wear loose clothing or jewelry Contain long hair Keep your hair cloth ing and gloves away from moving parts Loose clothes jewelry or long hair can be caught in moving parts Avoid accidental starting Be sure switch is off be fore plugging in Carrying tools with your finger on the switch or plugging in tools that have the switch on invites accidents Remove adjusting keys or wrenches before turn ing the tool on A wrench or a key that is left at tached to a rotating part of the tool may result in personal injury Do not overreach Keep proper footing and bal ance at all times Proper footing and balance en ables better control of the tool in unexpected situa tions Use safety equipment Always wear eye protec tion Dust mask non skid safety shoes hard hat or hearing protection must be used for appropriate con ditions Tool Use and Care Use clamps or other practical way to secure and support the workpiece to a stable platform Hold ing the work by hand or against your body is un stable and may lead to loss of control Do not force tool Use the correct tool for your application The correct tool will do the job better and safer at the rate for which it is designed Do not use tool if switch does not turn it on or off Any tool that cannot be controlled with the switch is d
21. ssseeeeeeeseeeees INTRODUCTION DOUBLE INSULATION Your Ryobi power tool is double insulated This means you are separated from the tool s electrical system by two complete sets of electrical insulation This extra layer of insulation is intended to protect the user from electrical shock due to a break in the wiring insulation All exposed metal parts are isolated from the internal metal motor components with protecting insulation Double insulated tools do not need to be grounded A 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 A WARNING Always use the guard that accompanied the grinder Comply with mounting and use instructions and warnings found in the manual for the grinder and ANSI B7 1 Failure to heed these warnings can result in wheel breakage and serious personal injury For more information on ANSI Standards contact the American National Standards Institute Inc 11 West 42nd Street 13th Floor New York NY 10036 A WARNING WEAR YOUR a sare GLASSES gt _ A FORESIGHT IS BETTER THAN NO SIGHT 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 AUTHORIZED SERV
22. sult 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 Page 6 ELECTRICAL EXTENSION CORDS When using a power tool at a considerable distance from the power source use an extension cord heavy enough to carry the current that the tool will draw An undersized extension cord will cause a drop in line voltage resulting in a loss of power and causing the motor to overheat Use the chart provided below to determine the minimum wire size required in an extension cord Only round jacketed cords listed by Underwriter s Laboratories UL should be used Length of Extension Cord Wire Size A W G Up to 50 16 51 to 100 14 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 ELECTRICAL CONNECTION Your grinder has a precision built electric motor It should be connected to a power supply that is 120 volts 60Hz AC only normal house
23. tion Secure small workpieces in a vise or clamp to a workbench A DANGER Never use your grinder with the guard removed It has been designed for use only with the guard installed Attempting to use grinder with guard removed will result in loose particles being thrown against the operator resulting in serious personal injury A WARNING Never use your grinder without wearing eye protection Following this rule will reduce the risk of serious personal injury The key to efficient operation begins by controlling the pressure and surface contact between the grinding wheel and workpiece Flat surfaces are ground 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 0 OFF SWITCH BUTTON 15 degrees and continuously moving at a steady consistent pace Move the grinder back and forth or up and down over the work area Keep the grinder moving so that an excessive amount of material is not removed from one area If the grinder is held in one spot too long it will gouge and cut grooves in the workpiece If the grinder is held at too sharp an angle it will also gouge the workpiece bec
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