7
FUNCTIONAL
DESCRIPTION CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.

Switch action

CAUTION:
• Before plugging in the tool, always check to see that the
switchtrigger actuates properly and returns to the “OFF”
position when released.
Tostart the tool, simply pull the switch trigger.Release the
switchtr igger to stop.

Reversingswitch action

This tool has a reversing switch to change the direction of
rotation. Depress the reversing switch lever from the A side
forclo ckwiserot ation or from the B side for counterclockwise
rotation.
CAUTION:
• Alwayscheck the dir ection of rotation before operation.
• Usethereversingswitchonlyafterthetoolcomestoa
complete stop. Changing the direction of rotation before
the tool stops may damage the tool.

Speed change

For Model DA4031only
Two speed ranges can be preselected with the speed
change knob.
Tochan ge the speed, depress the lock button and turn the
speed change knob so that the pointer points to the position
1for low speed or the position 2 for high speed.
CAUTION:
• Use the speed change knob only after the tool comes to
acompl ete stop.Chan ging the tool speed before the tool
stops mayda mage the tool.
• Always set the speed change knob carefully into the
correct position. If you operate the tool with the speed
1. Switch trigger
1
003021
1.Reversingswitchlever
1
AB
003028
1. Pointer
2. Speed change knob
3. Lock button
1
2
3
003031