Operation - Makita BHP442 Bedienungsanleitung

side for clockwise rotation or from the B side for
counterclockwise rotation.
When the reversing switch lever is in the neutral position,
the switch trigger cannot be pulled.
CAUTION:
Always check the direction of rotation before
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operation.

Use the reversing switch only after the tool comes
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to a complete stop. Changing the direction of
rotation before the tool stops may damage the tool.
When not operating the tool, always set the
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reversing switch lever to the neutral position.
Speed change
Fig.5
To change the speed, first switch off the tool and then
slide the speed change lever to the "2" side for high
speed or "1" side for low speed. Be sure that the speed
change lever is set to the correct position before
operation. Use the right speed for your job.
CAUTION:
Always set the speed change lever fully to the
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correct position. If you operate the tool with the
speed change lever positioned halfway between the
"1" side and "2" side, the tool may be damaged.
Do not use the speed change lever while the tool is
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running. The tool may be damaged.
Selecting the action mode
Fig.6
This tool employs an action mode changing ring. Select
one of the three modes suitable for your work needs by
using this ring.
For rotation only, turn the ring so that the arrow on the
tool body points toward the
For rotation with hammering, turn the ring so that the
arrow points toward the
For rotation with clutch, turn the ring so that the arrow
points toward the
CAUTION:
Always set the ring correctly to your desired mode
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mark. If you operate the tool with the ring
positioned halfway between the mode marks, the
tool may be damaged.
Adjusting the fastening torque
Fig.7
The fastening torque can be adjusted in 16 steps by
turning the adjusting ring so that its graduations are
aligned with the arrow on the tool body. The fastening
torque is minimum when the number 1 is aligned with
the arrow, and maximum when the number 16 is aligned
with the arrow.
Before actual operation, drive a trial screw into your
material or a piece of duplicate material to determine
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mark on the ring.
mark on the ring.
mark on the ring.
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which torque level is required for a particular application.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and the
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battery cartridge is removed before carrying out
any work on the tool.
Installing or removing driver bit or drill bit
Fig.8
Turn the sleeve counterclockwise to open the chuck
jaws. Place the bit in the chuck as far as it will go. Turn
the sleeve clockwise to tighten the chuck.
To remove the bit, turn the sleeve counterclockwise.
Installing bit holder (accessory)
Fig.9
Fit the bit holder into the protrusion at the tool foot on
either right or left side and secure it with a screw.
When not using the driver bit, keep it in the bit holders.
Bits 45 mm long can be kept there.
Hook (Accessory)
Fig.10
The hook is convenient for temporarily hanging the tool.
This can be installed on either side of the tool.
To install the hook, insert it into a groove in the tool
housing on either side and then secure it with a screw.
To remove, loosen the screw and then take it out.
OPERATION
CAUTION:
Always insert the battery cartridge all the way until
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it locks in place. If you can see the red part on the
upper side of the button, it is not locked completely.
Insert it fully until the red part cannot be seen. If not,
it may accidentally fall out of the tool, causing injury
to you or someone around you.
Hold the tool firmly with one hand on the grip and the
other hand on the bottom of the battery cartridge to
control the twisting action.
Hammer drilling operation
CAUTION:
There is a tremendous and sudden twisting force
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exerted on the tool/bit at the time of hole
break-through, when the hole becomes clogged
with chips and particles,
reinforcing rods embedded in the concrete.
First, turn the action mode changing ring so that the arrow
on the tool body points to the
ring can be aligned in any torque levels for this operation.
Be sure to use a tungsten-carbide tipped bit.
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
7
or when striking
marking. The adjusting