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Makita HR4040C Manuel D'instruction page 7

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Bit angle
(when chipping, scaling or demolishing)
1
2
3
4
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 "O" symbol.
Turn the bit to the desired angle.
Depress the lock button and rotate the change lever so
that the pointer points to the
that the bit is securely held in place by turning it slightly.
1
2
Depth gauge
2
1
The depth gauge is convenient for drilling holes of uni-
form 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.
NOTE:
The depth gauge cannot be used at the position
where the depth gauge strikes against the tool
body.
003173
1. Lock button
2. Change lever
3. Pointer
4. O symbol
symbol. Then make sure
003177
1. Change lever
2. Pointer
003185
1. Depth gauge
2. Clamp screw
OPERATION
Hammer drilling operation
Set the change lever to the
Position the bit at the desired location for the hole, then
pull the switch trigger. Do not force the tool. Light pres-
sure gives best results. Keep the tool in position and pre-
vent 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 break-
through, 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 opera-
tions. Failure to do so may result in the loss of con-
trol of the tool and potentially severe injury.
Blow-out bulb (optional accessory)
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
7
003201
symbol.
002449
1. Blow-out bulb
1

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