Makita DTD171 Instruction Manual page 12

Changing the impact force
You can change the impact force in four steps: max,
hard, medium, and soft.
This allows a tightening suitable to the work.
The level of impact force changes every time you press
the button or the quick mode-switching button.
Application mode
(Impact force grade
displayed on panel)
Max
Hard
Medium
Soft
NOTE: When none of the lamp on the panel is lit, pull the switch trigger once before pressing the button
quick mode-switching button.
NOTE: All lamps on the switch panel go out when the tool is turned off to save the battery power. The impact force
grade can be checked by pulling the switch trigger to the extent that the tool does not operate.
Changing assist type
This tool employs assist function that offers several
easy-to-use application modes for driving screws with
good control.
The type of the application mode changes every time
you press the button
Application mode
(Assist type displayed
on panel)
Wood mode *1
Bolt mode (reverse rota-
tion auto stop) *1 *2
Maximum blows
-1
3,800 min (/min) Tightening with the maximum force
and speed.
-1
3,600 min (/min) Tightening with less force and speed
than Max mode (easier to control than
Max mode).
-1
2,600 min (/min) Tightening when a good finishing is
needed.
-1
1,100 min (/min) Tightening with less force to avoid
screw thread breakage.
.
Maximum blows
-1
3,800 min (/min) This mode helps to prevent a screw from falling at
the beginning of driving. The tool drives a screw
with low-speed rotation at first. After the tool starts
to impact, the rotation speed increases and reaches
the maximum speed.
-1
3,800 min (/min) This mode helps to prevent a bolt from falling off.
When loosening a bolt with the tool driving in coun-
terclockwise rotation, the tool automatically stops
after the bolt/nut gets enough loosened. The stroke
of the switch trigger to reach maximum speed will
become short in this mode.
You can change the impact force within approximately
one minute after releasing the switch trigger or press-
ing the button
button.
► Fig.9: 1. Button
Purpose
You can change the assist type within approximately
one minute after releasing the switch trigger or press-
ing the button
button.
► Fig.10: 1. Button
Feature
12 ENGLISH
, , or the quick mode-switching
Example of application
Driving screws to underwork materi-
als, tightening long screws or bolts.
Driving screws to underwork materi-
als, tightening bolts.
Driving screws to finishing boards or
plaster boards.
Tightening sash screws or small
screws such as M6.
, , or the quick mode-switching
Purpose
Tightening long screws.
Loosening bolts.
or the