Electronic Function - Makita GRH08 Instruction Manual

Electronic function

The tool is equipped with the electronic functions for
easy operation.
• Electric brake
This tool is equipped with an electric brake. If the
tool consistently fails to quickly cease to function
after the switch trigger is released, have the tool
serviced at a Makita service center.
• Constant speed control
The speed control function provides the constant
rotation speed regardless of load conditions.
• Active Feedback sensing Technology
If the tool is swung at the predetermined accelera-
tion during operation, the motor is forcibly stopped
to reduce the burden on the wrist.
NOTE: This function does not work if the acceleration
does not reach the predetermined one when the tool
is swung.
NOTE: If the bit is swung at the predetermined
acceleration during chipping, scaling, or demolishing,
the motor is forcibly stopped. In this case, release
the switch trigger, and then pull the switch trigger to
restart the tool.
ASSEMBLY
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before carrying out any work on the tool.
Side grip (auxiliary handle)
CAUTION:
Always use the side grip to ensure
safe operation.
CAUTION:
After installing or adjusting the side
grip, make sure that the side grip is firmly secured with
its retaining projections fully engaged by the position-
ing recesses on the gear housing.
To install the side grip, follow the steps below.
1. Loosen the thumb screw on the side grip. Then install
the side grip over the barrel neck of the gear housing.
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Fig.17
► 1. Side grip 2. Thumb screw 3. Barrel neck of the
gear housing 4. Retaining projection 5. Positioning
recess
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4
5
The attachment ring can be enlarged by pressing
the thumb screw down so that the ring is easily and
securely engaged over the barrel neck of the gear
housing.
Fig.18
► 1. Thumb screw 2. Attachment ring
2. Tighten the thumb screw to secure the grip at your
desired angle.
Installing and removing drill bit
Grease
Clean the shank end of the drill bit and apply grease
before installing the drill bit.
Coat the shank end of the drill bit beforehand with a
small amount of grease (about 0.5 - 1 g).
This chuck lubrication assures smooth action and lon-
ger service life.
Fig.19
► 1. Shank end 2. Grease
Place the shank end of the drill bit into the chuck, and
insert it further into the chuck while hand-turning the
drill bit so the shank end well fits into the chuck slot and
becomes fully engaged.
Having installed the drill bit, try pulling it back to ensure
it is securely held in place.
12 ENGLISH
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