Makita DHP446 Instruction Manual page 9

NOTE:
• Use a dry cloth to wipe the dirt off the lens of the
lamp. Be careful not to scratch the lens of lamp,
or it may lower the illumination.
Reversing switch action
► Fig.6: 1. Reversing switch lever
CAUTION:
• Always check the direction of rotation before
operation.
• Use the reversing switch only after the tool
comes to a complete stop. Changing the direc-
tion of rotation before the tool stops may dam-
age the tool.
• When not operating the tool, always set the
reversing switch lever to the neutral position.
This tool has a reversing switch to change the direction
of rotation. Depress the reversing switch lever from the
A side for clockwise rotation or from the B side for coun-
terclockwise rotation.
When the reversing switch lever is in the neutral posi-
tion, the switch trigger cannot be pulled.
Speed change
► Fig.7: 1. Speed change lever
CAUTION:
• Always set the speed change lever fully to the
correct position. If you operate the tool with
the speed change lever positioned halfway
between the "1" side and "2" side, the tool may
be damaged.
• Do not use the speed change lever while the
tool is running. The tool may be damaged.
To change the speed, first switch off the tool and then
slide the speed change lever to the "2" side for high
speed or "1" side for low speed. Be sure that the speed
change lever is set to the correct position before opera-
tion. Use the right speed for your job.
Selecting the action mode
► Fig.8: 1. Action mode changing ring 2. Adjusting
ring 3. Graduation 4. Arrow
This tool employs an action mode changing ring. Select
one of the three modes suitable for your work needs by
using this ring.
For rotation only, turn the ring so that the arrow on the
tool body points toward the
For rotation with hammering, turn the ring so that the
arrow points toward the
For rotation with clutch, turn the ring so that the arrow
points toward the mark on the ring.
CAUTION:
• Always set the ring correctly to your desired
mode mark. If you operate the tool with the ring
positioned halfway between the mode marks,
the tool may be damaged.
mark on the ring.
mark on the ring.
Adjusting the fastening torque
► Fig.9: 1. Action mode changing ring 2. Adjusting
ring 3. Graduation 4. Arrow
The fastening torque can be adjusted in 16 steps by
turning the adjusting ring so that the graduations are
aligned with the arrow on the tool body. The fastening
torque is minimum when the number 1 is aligned with
the arrow, and maximum when the number 16 is aligned
with the arrow.
Before the actual operation, drive a trial screw into
your material or a piece of duplicate material to deter-
mine which torque level is required for a particular
application.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
the battery cartridge is removed before carrying
out any work on the tool.
Installing or removing the driver bit
or drill bit
► Fig.10: 1. Sleeve
Turn the sleeve counterclockwise to open the chuck
jaws. Place the bit in the chuck as far as it will go. Turn
the sleeve clockwise to tighten the chuck.
To remove the bit, turn the sleeve counterclockwise.
Installing the hook
► Fig.11: 1. Groove 2. Hook 3. Screw
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
housing on either side and then secure it with a screw.
To remove, loosen the screw and then take it out.
Installing the bit holder (Optional
accessory)
► Fig.12: 1. Bit holder 2. Bit
Fit the bit holder into the protrusion at the tool foot on
either right or left side and secure it with a screw.
When not using the driver bit, keep it in the bit holders.
Bits 45 mm long can be kept there.
9 ENGLISH