Operation - Makita BTD136 Instruction Manual

Indicating the remaining battery capacity (Fig. 8)
When you pull the switch trigger, the LED display shows
the remaining battery capacity.
The remaining battery capacity is shown as the following
table.
LED indicator status
012273
NOTE:
• When the LED display goes off, the tool is turned off to
save the battery power. To check the remaining battery
capacity, slightly pull the switch trigger.
• The LED display goes off approximately one minute
after releasing the switch trigger.
• When the tool is overheated, the light flashes once per
second for one minute, and then the LED display goes
off. In this case, cool down the tool before operating
again.
• When the LED display lights up and the tool stops even
with a recharged battery cartridge, cool down the tool
fully. If the status will not change, stop using and have
the tool repaired by a Makita local service center.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before carrying out any work
on the tool.
Installing or removing driver bit or socket bit
Use only bits that has inserting portion shown in the fig-
ure. (Fig. 9)
For tool with shallow bit hole
Use only these type of bit. Follow the
A = 12 mm
procedure (1).
B = 9 mm
(Note) Bit-piece is not necessary.
006348
For tool with deep bit hole
A = 17 mm To install these types of bits, follow the
B = 14 mm procedure (1).
To install these types of bits, follow the
A = 12 mm procedure (2).
B = 9 mm (Note) Bit-piece is necessary for
installing the bit.
011405
8
Remaining battery capacity
About 50% or more
About 20% – 50%
About less than 20%
Procedure 1 (Fig. 10)
For tool with normal sleeve
To install the bit, pull the sleeve in the direction of the
arrow and insert the bit into the sleeve as far as it will go.
Then release the sleeve to secure the bit.
For tool with one-touch type sleeve
To install the bit, insert the bit into the sleeve as far as it
will go.
Procedure 2 (Fig. 11)
In addition to the Procedure 1 above, insert the bit-piece
into the sleeve with its pointed end facing in.
To remove the bit, pull the sleeve in the direction of the
arrow and pull the bit out.
NOTE:
• If the bit is not inserted deep enough into the sleeve,
the sleeve will not return to its original position and the
bit will not be secured. In this case, try re-inserting the
bit according to the instructions above.
• When it is difficult to insert the bit, pull the sleeve and
insert it into the sleeve as far as it will go.
• After inserting the bit, make sure that it is firmly
secured. If it comes out, do not use it.
Hook (Fig. 12)
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 hous-
ing on either side and then secure it with a screw. To
remove, loosen the screw and then take it out.

OPERATION

The proper fastening torque may differ depending upon
the kind or size of the screw/bolt, the material of the
workpiece to be fastened, etc. The relation between fas-
tening torque and fastening time is shown in the figures.
(Fig. 13)
Model BTD136 (Fig. 14 & 15)
Model BTD147 (Fig. 16 & 17)
Hold the tool firmly and place the point of the driver bit in
the screw head. Apply forward pressure to the tool to the
extent that the bit will not slip off the screw and turn the
tool on to start operation.
NOTE:
• Use the proper bit for the head of the screw/bolt that
you wish to use.
• When fastening M8 or smaller screw, choose a proper
impact force and carefully adjust pressure on the
switch trigger so that the screw is not damaged.
• Hold the tool pointed straight at the screw.
• If the impact force is too strong you tighten the screw
for a time longer than shown in the figures, the screw or
the point of the driver bit may be overstressed,
stripped, damaged, etc. Before starting your job,
always perform a test operation to determine the
proper fastening time for your screw.
The fastening torque is affected by a wide variety of fac-
tors including the following. After fastening, always check
the torque with a torque wrench.
1. When the battery cartridge is discharged almost
completely, voltage will drop and the fastening
torque will be reduced.
2. Driver bit or socket bit
Failure to use the correct size driver bit or socket bit
will cause a reduction in the fastening torque.