7
Hammer drilling operation
First, turn the action mode changing ring so that the
arrow on the tool body points to the X marking. The
adjusting ring can be aligned in any torque levels for this
operation. Position the bit at the desired location for the
hole, then pull the trigger. Do not force the tool. Light
pressure gives best results. Keep the tool in position and
prevent it from slipping away from the hole. Do not apply
more pressure when the hole becomes clogged with
chips or particles. Instead, run the tool at an idle, then
remove the bit partially from the hole. By repeating this
several times, the hole will be cleaned out and normal
drilling may be resumed.
CAUTION:
There is a tremendous and sudden twisting force exerted
on the tool/bit at the time of hole breakthrough, when the
hole becomes clogged with chips and particles, or when
striking reinforcing rods embedded in the concrete.
Always use the side grip (auxiliary handle) and firmly
hold the tool by both side grip and switch handle during
operations. Failure to do so may result in the loss of con-
trol of the tool and potentially severe injury.
Blow-out bulb (Fig. 12)
Use the blow-out bulb to clean out the hole.
Installing set plate (Fig. 13)
For 8413D
Always install the set plate when using battery cartridges
1200, 1202 or 1202A. Install the set plate on the tool with
the screw provided.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and the bat-
tery cartridge is removed before carrying out any work on
the tool.
Replacement of carbon brushes (Fig. 14 & 15)
Replace carbon brushes when they are worn down to the
limit mark. Both identical carbon brushes should be
replaced at the same time.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by Makita
Authorized Service Center.
