Operation – Makita HR4002 User Manual
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Bit angle (when chipping, scaling or
demolishing)
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2
3
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The bit can be secured at 12 different angles. To change
the bit angle, depress the lock button and rotate the
change lever so that the pointer points to the
symbol.
Turn the bit to the desired angle.
Depress the lock button and rotate the change lever so
that the pointer points to the
symbol. Then make sure
that the bit is securely held in place by turning it slightly.
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Depth gauge
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The depth gauge is convenient for drilling holes of
uniform depth. Insert the depth gauge into the hole in the
grip base. Adjust the depth gauge to the desired depth
and then tighten the clamp screw to secure the depth
gauge.
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the clamp screw and adjust the
depth gauge to the desired depth. After adjusting,
tighten the clamp screw firmly.
NOTE:
•
The depth gauge cannot be used at the position
where the depth gauge strikes against the tool
body.
•
The depth gauge cannot be used at the position
where the depth gauge strikes against the gear
housing/motor housing.
OPERATION
Hammer drilling operation
008066
Set the change lever to the
symbol.
Position the bit at the desired location for the hole, then
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 normal drilling may be resumed.
CAUTION:
•
When the bit begins to break through concrete or if
the bit strikes reinforcing rods embedded in
concrete, the tool may react dangerously. Maintain
good balance and safe footing while holding the
tool firmly with both hands to prevent dangerous
reaction.
Blow-out bulb (optional accessory)
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002449
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
1. Blow-out bulb
1. Depth gauge
2. Clamp screw
3. Grip base
1. Pointer
2. Change lever
3. Lock button
1. Pointer
2. Change lever
3. Lock button