Electronic Function - Makita DUA301 Instruction Manual

NOTICE:
Do not pull the switch trigger hard with-
out pressing the lock-off lever. This can cause
switch breakage.
To prevent the switch trigger from being accidentally
pulled, a lock-off lever is provided. To start the tool,
depress the lock-off lever and pull the switch trigger.
The tool speed increases by increasing pressure on the
switch trigger. Release the switch trigger to stop.
► Fig.5: 1. Switch trigger 2. Lock-off lever
Adjusting the pipe length
To extend or shorten the pipe, loosen the lock ring by
turning the lock ring counterclockwise, then adjust the
length of the pipe, and then tighten the ring by turning
the lock ring clockwise.
► Fig.6: 1. Lock ring 2. Pipe

Electronic function

The tool is equipped with the electronic functions for
easy operation.
• Constant speed control
The speed control function provides the constant
rotation speed regardless of load conditions.
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.
CAUTION:
Do not touch the saw chain with
bare hands. Always wear gloves when handling
the saw chain.
Assembling the tool
1. Remove 2 caps from the pipe, and 1 cap from the
head of the tool.
► Fig.7: 1. Cap 2. Pipe 3. Head of tool
2. Loosen 3 bolts, and then remove 1 bolt using the
hex wrench.
► Fig.8: 1. Bolt
3. Insert the pipe into the tool body all the way, and
then align the hole on the pipe with the hole on the tool
body.
► Fig.9: 1. Hole 2. Pipe
4. Tighten 3 bolts using the hex wrench.
► Fig.10: 1. Bolt
5.
Loosen 2 bolts, and then remove 1 bolt.
► Fig.11: 1. Bolt
6. Loosen the lock ring by turning the lock ring coun-
terclockwise, then extend the pipe approximately 10 cm
or more, and then tighten the lock ring by turning the
lock ring clockwise.
► Fig.12: 1. Lock ring 2. 10 cm or more 3. Pipe
7. Insert the pipe into the head of the tool all the way,
and then align the hole on the pipe with the hole on the
head of the tool.
► Fig.13: 1. Hole 2. Pipe
8. Tighten 2 bolts using the hex wrench.
► Fig.14: 1. Bolt
Removing or installing saw chain
CAUTION:
The saw chain and the guide bar
are still hot just after the operation. Let them cool
down enough before carrying out any work on
the tool.
CAUTION:
Carry out the procedure of install-
ing or removing saw chain in a clean place free
from sawdust and the like.
To remove the saw chain, perform the following steps:
1.
Loosen the chain adjusting screw, then the retain-
ing nut.
► Fig.15: 1. Chain adjusting screw 2. Retaining nut
2. Remove the sprocket cover, and then remove the
saw chain and guide bar from the tool body.
To install the saw chain, perform the following steps:
1. Check the direction of the saw chain. Match the
direction of the saw chain with that of the mark on the
tool body.
2. Fit one end of the saw chain on the top of the
guide bar. Fit the other end of the saw chain around the
sprocket. Make sure that the saw chain is properly fitted
on the sprocket and properly fitted in the groove of the
guide bar.
3.
Attach the guide bar to the tool body, aligning the
hole on the guide bar with the pin on the tool body.
► Fig.16: 1. Sprocket 2. Hole
4. Insert the protrusion on the sprocket cover to the
tool body, and then close the cover so that the bolt and pin
on the tool body meet their counterparts on the cover.
► Fig.17: 1. Protrusion 2. Sprocket cover 3. Bolt
4. Pin
5. Tighten the retaining nut to secure the sprocket
cover, then loosen it a bit for tension adjustment.
► Fig.18: 1. Retaining nut
Adjusting saw chain tension
CAUTION:
Do not tighten the saw chain too
much. Excessively high tension of saw chain may
cause breakage of saw chain and wear of the guide
bar.
CAUTION:
A chain which is too loose can
jump off the bar and it may cause an injury
accident.
The saw chain may become loose after many hours
of use. From time to time check the saw chain tension
before use.
1. Loosen the retaining nut a bit to loosen the
sprocket cover lightly.
► Fig.19: 1. Retaining nut
17 ENGLISH