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ENGLISH (

O

rigina

l in
st

ruct

ions)

 

 

INSTRUCTION MANUAL

 

IMPORTANT: 

Read Before Using. 

Hammer Drill

8420V 
   

012949 

Summary of Contents for 8420V

Page 1: ...1 ENGLISH Original instructions INSTRUCTION MANUAL IMPORTANT Read Before Using Hammer Drill 8420V 012949 ...

Page 2: ...ly This tool should be grounded while in use to protect the operator from electric shock Use only three wire extension cords which have three prong grounding type plugs and three pole receptacles which accept the tool s plug GEA005 3 General Power Tool Safety Warnings WARNING Read all safety warnings and all instructions Failure to follow the warnings and instructions may result in electric shock ...

Page 3: ...se clothes jewellery or long hair can be caught in moving parts 17 If devices are provided for the connection of dust extraction and collection facilities ensure these are connected and properly used Use of dust collection can reduce dust related hazards Power tool use and care 18 Do not force the power tool Use the correct power tool for your application The correct power tool will do the job bet...

Page 4: ...PTION CAUTION Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool Switch action 1 2 3 012954 CAUTION Before plugging in the tool always check to see that the switch trigger actuates properly and returns to the OFF position when released Switch can be locked in ON position for ease of operator comfort during extended use Apply caution when lo...

Page 5: ... three chuck holes evenly To remove the bit turn the chuck key counterclockwise in just one hole then loosen the chuck by hand After using the chuck key be sure to return it to the original position Depth gauge 1 2 012952 Loosen the wing bolt and adjust the depth gauge to the desired depth After adjusting tighten the wing bolt OPERATION CAUTION Always use the side grip auxiliary handle and firmly ...

Page 6: ...of hole break through Hold the tool firmly and exert care when the bit begins to break through the workpiece A stuck bit can be removed simply by setting the reversing switch to reverse rotation in order to back out However the tool may back out abruptly if you do not hold it firmly Always secure small workpieces in a vise or similar hold down device MAINTENANCE CAUTION Always be sure that the too...

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Page 8: ...8 Makita Corporation www makita com 883328D9 ...

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