Makita HP331D Manuel D'instructions page 8

When the reversing switch lever is in the neutral posi-
tion, the switch trigger cannot be pulled.
Speed change
[Fig.6: 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.
CAUTION:
Do not use the speed change lever
while the tool is running. The tool may be damaged.
Position of Speed
speed
change lever
1 Low
2 High
To change the speed, switch off the tool first. Select
the "2" side for high speed or "1" for low speed but high
torque. Be sure that the speed change lever is set to the
correct position before operation.
Adjusting the fastening torque
[Fig.8: 1. Action mode changing ring 2. Adjusting ring 3. Graduation
The fastening torque can be adjusted in 18 steps by turning the adjusting ring. Align the graduations with the arrow
on the tool body. You can get the minimum fastening torque at 1 and maximum torque at 18.
Before actual operation, drive a trial screw into your material or a piece of duplicate material to determine which
torque level is required for a particular application. The following shows the rough guide of the relationship between
the screw size and graduation.
Graduation
Machine screw
Wood Soft wood
screw (e.g. pine)
Hard wood
(e.g. lauan)
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.
8 ENGLISH
Torque Applicable
operation
High Heavy load-
ing operation
Low Light loading
operation
1 2 3 4 5
M4
–
–
If the tool speed is coming down extremely during the
operation with "2", slide the lever to the "1" and restart
the operation.
Selecting the action mode
CAUTION:
your desired mode mark. If you operate the tool
with the ring positioned halfway between the
mode marks, the tool may be damaged.
CAUTION:
from " " to other modes, it may be a little diffi-
culty to slide the action mode changing ring. In
this case, switch on and run the tool for a second
at the " " position, then stop the tool and slide
the ring to your desired position.
[Fig.7: 1. Action mode changing ring 2. Adjusting
ring 3. Graduation 4. Arrow]
This tool has three action modes.
• Drilling mode (rotation only)
• Hammer drilling mode (rotation with
hammering)
• Screwdriving mode (rotation with clutch)
Select one mode suitable for your work. Turn the
action mode changing ring and align the mark that you
selected with the arrow on the tool body.
6 7 8 9 10
–
Installing or removing driver bit/drill
bit
Optional accessory
[Fig.9: 1. Sleeve
Turn the sleeve counterclockwise to open the chuck
jaws. Place the driver bit/drill bit in the chuck as far
as it will go. Turn the sleeve clockwise to tighten the
chuck. To remove the driver bit/drill bit, turn the sleeve
counterclockwise.
Installing hook
[Fig.10: 1. Groove
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
Always set the ring correctly to
When you change the position
4. Arrow]
11 12 13 14 15
M5
ɸ3.5 x 22 ɸ4.1x 38
ɸ3.5 x 22
2. Close 3. Open]
2. Hook 3. Screw]
16 17 18
M6
–
ɸ4.1x 38