Operation - Makita BHR241 Bedienungsanleitung

CAUTION:
Do not rotate the action mode changing knob when
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the tool is running. The tool will be damaged.
To avoid rapid wear on the mode change
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mechanism, be sure that the action mode changing
knob is always positively located in one of the three
action mode positions.
Torque limiter
The torque limiter will actuate when a certain torque level
is reached. The motor will disengage from the output
shaft. When this happens, the bit will stop turning.
CAUTION:
As soon as the torque limiter actuates, switch off
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the tool immediately. This will help prevent
premature wear of the tool.
Hole saws cannot be used with this tool. They tend
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to pinch or catch easily in the hole. This will cause
the torque limiter to actuate too frequently.
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)
Fig.7
CAUTION:
Always use the side grip to ensure operating safety.
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Install the side grip so that the teeth on the grip fit in
between the protrusions on the tool barrel. Then tighten
the grip by turning clockwise at the desired position. It
may be swung 360° so as to be secured at any position.
Bit grease
Coat the bit shank head beforehand with a small amount
of bit grease (about 0.5 -1 g). This chuck lubrication
assures smooth action and longer service life.
Installing or removing the bit
Clean the bit shank and apply bit grease before installing
the bit.
Fig.8
Insert the bit into the tool. Turn the bit and push it in until it
engages.
Fig.9
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn the bit and push it in until it engages.
After installing, always make sure that the bit is securely
held in place by trying to pull it out.
To remove the bit, pull the chuck cover down all the way
and pull the bit out.
Fig.10
Bit angle (when chipping, scaling or
demolishing)
Fig.11
The bit can be secured at the desired angle. To change
the bit angle, depress the lock button and rotate the
action mode changing knob to the O symbol. Turn the bit
to the desired angle.
Depress the lock button and rotate the action mode
changing knob to the
bit is securely held in place by turning it slightly.
Fig.12
Depth gauge
Fig.13
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the side grip and insert the depth
gauge into the hole in the side grip. Adjust the depth
gauge to the desired depth and tighten the side grip.
NOTE:
The depth gauge cannot be used at the position
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where the depth gauge strikes against the gear
housing.
Dust cup
Fig.14
Use the dust cup to prevent dust from falling over the tool
and on yourself when performing overhead drilling
operations. Attach the dust cup to the bit as shown in the
figure. The size of bits which the dust cup can be
attached to is as follows.
Dust cup 5
Dust cup 9
006382

OPERATION

Hammer drilling operation
Fig.15
Set the action mode changing knob to the
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:
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, or when striking reinforcing
7
symbol. Then make sure that the
Bit diameter
6 mm - 14.5 mm
12 mm - 16 mm
symbol.