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4
Adjusting depth of drilling (Fig. 4)
Loosen the wing bolt and adjust the depth gauge to the
desired depth. After adjusting, tighten the wing bolt.
NOTE:
The depth gauge cannot be used at the position where
the depth gauge strikes against the gear housing.
Side grip (Auxiliary handle) (Fig. 4)
The side grip swings around to either side, allowing easy
handling of the tool in any position. Loosen the wing bolt
on the side grip and swing the side grip to the desired
position. Then tighten the wing bolt to secure the side
grip.
Operating instruction (Fig. 5)
Important:
Before plugging in the tool, always check to see that the
switch trigger actuates properly and returns to the “OFF”
position when released.
Switching ON and OFF (Fig. 5)
To switch on, press the trigger.
To switch off, release the trigger.
Continuous running (Fig. 5)
Press the trigger and at the same time slide the lock lever
upward. To stop from this lock position, press the trigger
and release it.
Variable trigger speed control (Fig. 5)
The speed varies from 0 to maximum, depending on the
pressure applied to the trigger. The more the trigger is
pressed, the faster the tool runs.
Reversing switch (Fig. 5)
Important:
Only reverse the direction of rotation when the motor
stops completely.
To change the direction of rotation:
Position FWD: right hand rotation
Position REV: left hand rotation
Three selecting action modes (Fig. 6)
For hammer drilling:
Turn the knob so that the arrow points toward the
symbol.
For drilling only:
Turn the knob so that the arrow points toward the
symbol.
For hammering only:
Turn the knob so that the arrow points toward the
symbol.
NOTE:
When it is hard to turn the knob, pull the switch trigger
half-way for running at low speed and turn the knob.
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 the tool
immediately. This will help prevent premature wear of the
tool. Hole saws, core bit, diamond core bit, etc. cannot be
used with this tool. They tend to pinch or catch easily in
the hole. This will cause the torque limiter to actuate too
frequently.
Using cold chisel or bull point (Fig. 7)
1. Disconnect plug.
2. Remove the side grip from the tool.
3. Turn the knob to hammer drilling symbol .
4. Install the cold chisel or bull point and then the chisel
adapter (optional accessory) on the tool.
5. Rotate the cold chisel toward the direction suitable
for your work. Then secure the cold chisel and chisel
adapter by using the clamp screw on the chisel
adapter.
6. Turn the knob to hammering only symbol . Now
you can use the cold chisel or bull point.
NOTE:
Always set “hammering only” action when using the cold
chisel or bull point. If you use “hammer drilling” or “drilling
only” action, the hammering mechanism may be dam-
aged on the tool.
Drilling in wood or metal (Fig. 8)
Use the optional drill chuck assembly (consisting of drill
chuck and chuck adapter assembly). When installing it,
refer to “installing or removing drill bit” described on the
previous page. Set the knob to “drilling only”. You can drill
up to 13 mm diameter in metal and up to 38 mm diame-
ter in wood. (Note: When using a flat boring bit.)
NOTE:
Never set “hammer drilling” action when using the drill
chuck assembly because it may be damaged and come
off when reversing the tool.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
4


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