Electronic Function - Makita DUA250 Instruction Manual

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.
• Electric brake
This tool is equipped with an electric brake. If
the tool consistently fails to quickly stop after the
switch trigger is released, have the tool serviced at
a Makita service center.
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.
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.
► 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.
2 1
11 ENGLISH
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.
2
► 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.
3
► 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.
► 1. Retaining nut
1
2
1
4
1