Makita DTD137 Instruction Manual page 8

Changing the impact force
2
3
4
5
1. Changed in four steps 2. Hard 3. Medium 4. Soft 5. T mode 6. Button
Impact force grade
displayed on panel
Hard
Medium
Soft
T mode
The impact force can be changed in four steps: hard, medium, soft, and T mode.
This allows a tightening suitable to the work.
Every time the button
"T" is a special mode for fastening self drilling screws. In this mode, the tool starts to drive a screw with faster rota-
tion, which is suited for drilling with the self-drilling -screw tip. Once the tool starts to tighten the screw, it impacts in
medium force grade.
For approximately one minute after releasing the switch trigger, the impact force can be changed.
1
6
Maximum blows
DTD137 DTD148
3,600
3,800 Tightening when force
(min -1 ) (min -1 ) and speed are desired.
2,600
2,600 Tightening when a good
(min -1 )
(min -1 ) finishing is needed.
Tightening when excessive
tightening need to be avoided
1,100
1,100
because of potentially clogged
(min -1 )
(min -1 )
female screw and broken or
damaged screw head.
2,600 2,600 Tightening when speed
(min -1 ) (min -1 ) and good finishing are needed.
is pressed, the number of blows changes in four steps.
Application
8 ENGLISH
Work
Tightening in underwork
material/ Tightening long
screws/ Tightening bolts.
Tightening in the finishing
board, plaster board.
Tightening sash screw/
Tightening small screws
such as M6.
Tightening self
drilling screws.