MasterCraft 054-7120-4 Instruction Manual Download Page 17

ANGLE GRINDER - 054-7120-4

16

Grinding operation

WARNING!

Only use grinding wheels for which the maximum safe operating speed is rated at or 
above 13200 RPM. Never use damaged or imbalanced grinding wheels. Do not exceed the 
recommended wheel diameter. Grinding wheel type 27 is recommended for use on this grinder.

WARNING!

Firmly grasp the body of the tool and the side handle before starting.

Grinding tips

•  Use a clamp, vise or other practical means to hold your work, freeing both hands to control your tool. 

Firmly grasp the body of tool and the side handle before starting and while the tool is in operation. 

•  Efficient grinding is achieved by controlling 

the pressure and keeping the angle between 
the wheel and the workpiece at 10° to 15° 
(fig 7). If the wheel is flat, the tool is difficult to 
control. If the angle is to steep, the pressure is 
concentrated on a small area, causing burning 
to the work surface.

•  Move the angle grinder back and forth with 

moderate pressure to avoid discoloring the 
workpiece, overheating the workpiece and 
creating ridges.

•  Never use a cut-off wheel to grind a workpiece.

•  Always hold the tool properly so that sparks and grinding dust fly away from the body.

•  Start the tool before applying the accessory to the workpiece and let the tool come to full speed 

before contacting the workpiece. Lift the tool from the workpiece before turning the tool OFF.

•  When grinding with a new wheel be certain to grind while pulling tool backwards until wheel 

becomes rounded on its edge. New wheels have sharp corners which tend to “bite” or cut into 
workpiece when pushing forward.

WARNING!

Sparks are generated when grinding metal. Take care that no combustible material 
presented in the area of flying sparks

.

fig 7

10°~ 15°

OPERA

TING INSTR

UCTIONS

Summary of Contents for 054-7120-4

Page 1: ...INSTRUCTION MANUAL ANGLE GRINDER 054 7120 4...

Page 2: ...1 800 689 9928 Read and understand this instruction manual thoroughly before using the product It contains important information for your safety as well as operating and maintenance advice Keep this i...

Page 3: ...LE GRINDER 054 7120 4 2 TABLE OF CONTENTS TECHNICAL SPECIFICATIONS 3 SAFETY GUIDELINES 4 9 DESCRIPTION 10 OPERATING INSTRUCTIONS 11 16 MAINTENANCE 17 18 TROUBLESHOOTING 19 PARTS LIST 20 21 WARRANTY 22...

Page 4: ...RINDER 054 7120 4 3 RATED POWER INPUT 5A RATING 120 V 60 Hz RATED SPEED 11 000 RPM WHEEL DIAMETER 4 1 2 115 mm ARBOR SIZE 5 8 RECOMMENDED WHEEL Type 27 TOOL WEIGHT 3 lb 15 oz 1 79 kg TECHNICAL SPECIFI...

Page 5: ...ur tool To operate this tool carefully read this Instruction Manual and all labels affixed to the Angle Grinder before using Keep this manual available for future reference Important This tool should...

Page 6: ...e cord away from heat oil sharp edges or moving parts Damaged or entangled cords increase the risk of electric shock When operating a power tool outdoors use an extension cord suitable for outdoor use...

Page 7: ...er source and or the battery pack from the power tool before making any adjustments changing accessories or storing power tools Such preventive safety measures reduce the risk of starting the power to...

Page 8: ...use inspect the accessory If the power tool or accessory is dropped inspect it for damage or install an undamaged accessory After inspecting and installing an accessory position yourself and bystander...

Page 9: ...iquid coolants Using water or other liquid coolants may result in electrocution or shock The label on your tool may include the following symbols The symbols and their definitions are as follows V Vol...

Page 10: ...wer tool and positioned for maximum safety so the least amount of wheel is exposed towards the operator The guard helps to protect the operator from broken wheel fragments accidental contact with whee...

Page 11: ...9 Wheel guard 5 Inner flange Before attempting to use this tool become familiar with all of its operating features and safety requirements For optimum performance and safety read the following operat...

Page 12: ...is on the OFF position before you plug the tool into an outlet Failure to do this could result in accidental starting and cause serious injury 2 To turn the tool ON without locking it slide the switch...

Page 13: ...and ease of operation WARNING Failure to unplug the tool from the power source when assembling parts making adjustments or changing application tools could result in accidental starting and cause seri...

Page 14: ...ase the guard adjusting lever to lock the guard and make sure the lever secures the guard WARNING Never use your grinder with the guard removed It has been designed for use only with the guard attache...

Page 15: ...rotate the guard so that the tabs on the guard are aligned with the slots on the gear case cover and pull up on the guard To mount the guard 1 Unplug the angle grinder 2 Remove the outer and inner fl...

Page 16: ...ner flange on the spindle make sure that the flange is positioned so that the shape of the opening in the flange corresponds with the shape at the base of the spindle 4 Place the grinding wheel on the...

Page 17: ...s difficult to control If the angle is to steep the pressure is concentrated on a small area causing burning to the work surface Move the angle grinder back and forth with moderate pressure to avoid d...

Page 18: ...ting oil etc come into contact with plastic parts These substances contain chemicals that can damage weaken or destroy plastic WARNING When servicing use only identical replacement parts The use of an...

Page 19: ...ing any maintenance The tool may be cleaned most effectively with compressed dry air Always wear safety goggles when cleaning tools with compressed air Ventilation openings and switch levers must be k...

Page 20: ...nnect the tool to a power source The plugs are not fully connected Make sure all plugs are connected The tool is running slowly The grinding wheel is worn out Replace the grinding wheel on the tool If...

Page 21: ...ANGLE GRINDER 054 7120 4 20 Exploded view PARTS LIST...

Page 22: ...ng 23 2750998001 Rotor 24 5700004001 Ball Bearing PARTS LIST No Part No Description 25 3121026001 Bearing Holder 26 3127161001 Fan Baffle 27 5610051006 Tapping Screw 28 2740344001 Stator 29 4870023018...

Page 23: ...bour relating thereto These warranties are subject to the following conditions and limitations a a bill of sale verifying the purchase and purchase date must be provided b this warranty will not apply...

Page 24: ...dentified as the product of another company which shall be covered under the product manufacturer s warranty if any Additional limitations This warranty applies only to the original purchaser and may...

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