Operation; Maintenance - Makita HR4003C Instruction Manual

NOTE:
where the depth gauge strikes against the gear
housing/motor housing.

OPERATION

CAUTION:
Hammer drilling operation
Set the change lever to the
pull the switch 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 you can continue drilling operation.
CAUTION:
force exerted on the tool/bit at the time of hole
break-through, when the hole becomes clogged
with chips and particles, or when striking rein-
forcing rods embedded in the concrete. Always
hold the tool by both side grip and switch handle
during operations, and maintain good balance
and safe footing. Failure to do so may result
in the loss of control of the tool and potentially
symbol.
Blow-out bulb (optional accessory)
1. Blow-out bulb
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
Set the change lever to the
and apply slight pressure on the tool so that the tool

MAINTENANCE

CAUTION:
unplugged before attempting to perform inspec-
tion or maintenance.
or the like. Discoloration, deformation or cracks
may result.
Lubrication
CAUTION:
Authorized Service Centers only.
9 ENGLISH
1
or symbol.