BRUSHLESS ANGLE GRINDER 241-0491 OPERATOR’S MANUAL CAUTION: To Reduce The Risk Of Injury, User Must Read And Understand Operator’s Manual. Save These Instructions For Future Reference. For questions / comments, technical assistance or repair parts – Please Call Toll Free: 1-866-917-4374 (M-F 8:30am-5:00pm EST).
TABLE OF CONTENTS Safety Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3 Overview/Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY SYMBOLS Some of these following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and more safely.
SAFETY INSTRUCTIONS 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 symbol warnings do not, by themselves, eliminate any danger. The instructions and warnings they give are no substitutes for proper accident prevention measures.
SAFETY INSTRUCTIONS GENERAL POWER TOOL SAFETY WARNINGS WARNING: Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE. The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool. 5.
SAFETY INSTRUCTIONS 8. Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second. POWER TOOL USE AND CARE 1. 2. 3. 4. 5. 6. 7. 8. Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
SAFETY INSTRUCTIONS SAFETY WARNINGS COMMON FOR GRINDING, CUTTING-OFF OPERATIONS 1. 2. 3. 4. 5. 6. 7. This power tool is intended to function as a grinder or cut-off tool. Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. Operations such as sanding, wire brushing or polishing are not recommended to be performed with this power tool.
SAFETY INSTRUCTIONS FURTHER SAFETY INSTRUCTIONS FOR ALL OPERATIONS KICKBACK AND RELATED WARNINGS Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding.
SAFETY INSTRUCTIONS • • • • • loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage. Do not position your body in line with and behind the rotating wheel. When the wheel, at the point of operation, is moving away from your body, the possible kickback may propel the spinning wheel and the power tool directly at you.
OVERVIEW Auxiliary-Handle Socket Speed Adjusting Dial Spindle-Lock Button Air-inlet Filter Collar Lock-Off Lever Backing Flange Paddle Switch Lock Nut Auxiliary Handle Wrench 4-1/2” (115 mm) Cutting Guard 5” (125 mm) Cutting Guard 4-1/2” (115 mm) 5” (125 mm) Grinding Guard Grinding Guard Grinding Wheel SPECIFICATIONS Rated Voltage 20 V d.c. Rated Speed 3500 - 9000/min Wheel Diameter 4-1/2" (115 mm) and 5" (125 mm) Arbor Size 5/8" Weight (without battery) 3 lbs. 4 oz (1.
ASSEMBLY WARNING: If any part is broken or missing, DO NOT attach the battery pack or operate the tool until the broken or missing part is replaced. Failure to do so could result in possible serious 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 injury.
OPERATION TO ATTACH THE BATTERY PACK (FIG.1) FIG. 1 Detach TO INSTALL/REMOVE THE GRINDING GUARD (FIG. 2) FIG. 2 Guard Lever Adjusting Screw Attach 1. 2. 3. BatteryRelease Button Make sure that the angle grinder is turned off. Align the raised rib on the battery pack with the grooves on the bottom of the tool, and then attach the battery pack to the angle grinder. Pull on the battery pack to make sure it is securely latched to the tool. TO DETACH THE BATTERY PACK (FIG. 1) 1. 2. 3.
OPERATION TO ADJUST THE GUARD (FIG. 2) To adjust the guard, keep the guard lever open, then rotate the guard to a suitable position so that the guard is positioned where it can provide maximum operator protection, then close the lever to lock the guard in place. NOTICE: Use only grinding wheels of the specified size with the grinding guard. Use only cut-off wheels of the specified size with the cutting guard. NOTICE: The guard is pre-adjusted to the diameter of the gear-box collar at the factory.
OPERATION The grinding wheel or cutting wheel (not included) can be mounted on this tool. The following is the installation tutorial for both wheels. WARNING: Only use accessories that comply with the size marked on the tool. 1. Remove the battery pack. 2. Depress the spindle-lock button, loosen the lock nut with the supplied wrench. Remove the locking nut and the backing flange. 3. Wipe the spindle, locking nut and backing flange to remove dust and debris. Inspect the parts for damage. Replace if needed.
OPERATION 2. To remove the auxiliary handle, remove the battery pack, then loosen the auxiliary handle by turning the handle counterclockwise. WARNING: For safety and ease of operation, securely tighten the auxiliary handle by turning the handle clockwise before every use. TO INSTALL/REMOVE THE AIR-INLET FILTER (FIG. 7) WARNING: Always wear safety goggles or safety glasses with side shields during power tool operation. If operation is dusty, also wear a dust mask. PADDLE SWITCH OPERATION (FIG. 8) FIG.
OPERATION SPEED ADJUSTING DIAL (FIG. 9) FIG. 9 Speed Adjusting Dial The speed adjusting dial has levels 1 through 6. Before using this tool, turn the speed adjusting dial to level 1 and then set the speed adjusting dial to a most suitable level during the grinding/cutting process. GRINDING (FIG. 10) FIG. 10 10°– 15° WARNING: Do not apply too much pressure. Too much pressure will cause the tool to overload and may cause personal injury. WARNING: Sparks are generated when grinding metal.
OPERATION CUTTING (FIG.11) FIG. 11 Using the cutting guard, it is possible to perform limited cut-off operations on small stock such as concrete, metal tubes, piping, or rebar. WARNING: The cutting guard must be installed when using a cutting wheel to provide maximum protection for the operator. When using a cutting wheel, hold the tool as shown, and use only the edge of the wheel. Work with moderate feed, adapted to the material being cut.
MAINTENANCE BEFORE EACH USE: WARNING: Detach the battery from the grinder before cleaning or performing any maintenance. WARNING: Always wear safety goggles or safety glasses with side shields during power tool operations, or when blowing dust. If operation is dusty, also wear a dust mask. WARNING: Do not at any time let brake fluids, gasoline, petroleum-based products, penetrating oils, etc. come in contact with plastic parts.
TROUBLESHOOTING PROBLEM The tool does not work. POSSIBLE CAUSE SOLUTION The battery is depleted. Charge the battery. The tool or the battery is overloaded. Decrease the load on the tool and restart the tool again. The tool or the battery is overheated. Allow the tool and battery to cool down and restart the tool. Wheel cannot be installed. Wheel is of the wrong size. Refer to specification chart for proper wheel size. Auxiliary handle cannot be installed.
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BRUSHLESS ANGLE GRINDER WARRANTY 90-DAY MONEY BACK GUARANTEE: This MASTERFORCE® brand power tool carries our 90-DAY Money Back Guarantee. If you are not completely satisfied with your MASTERFORCE® brand power tool for any reason within ninety (90) days from the date of purchase, return the tool with your original receipt to any MENARDS® retail store, and we will provide you a refund – no questions asked.
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