Adjusting Saw Chain Tension - Makita DUC305 Instruction Manual

To install the saw chain, perform the following steps:
1. Make sure the direction of the chain. The arrow
mark on the chain shows the direction of the chain.
2.
Fit in one end of the saw chain on the top of the
guide bar and the other end around the sprocket.
1
► 1. Sprocket
3. Rest the guide bar in place on the chain saw.
4. Place the sprocket cover on the chain saw so that
the adjusting pin is positioned in a small hole on the
guide bar.
1
4
► 1. Sprocket cover 2. Guide bar 3. Hole 4. Adjusting
pin
5. Tighten the retaining nuts to secure the sprocket
cover, then loosen it a bit for tension adjustment.
(See the chapter on "Adjusting saw chain tension" for
procedure.)
1
► 1. Retaining nut
2
3
11 ENGLISH
To remove the saw chain, perform the following steps:
1. Release the chain brake by pulling the front hand
guard.
2.
Loosen the chain adjusting screw, then the retain-
ing nuts.
1
► 1. Chain adjusting screw 2. Retaining nut
3. Sprocket cover
3. Remove the sprocket cover then remove the saw
chain and guide bar from the chain saw body.

Adjusting saw chain tension

CAUTION:
Carry out the procedure of install-
ing or removing saw chain in a clean place free
from sawdust and the like.
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.
Release the chain brake by pulling the front hand
guard.
2. Loosen the retaining nuts a bit to loosen the
sprocket cover lightly.
1
► 1. Retaining nut
3
2