Removing The Saw Chain; Adjusting Saw Chain Tension - Makita UC002G Instruction Manual

ASSEMBLY
Always be sure that the tool is
CAUTION:
switched off and the battery cartridge is removed
before carrying out any work on the tool.
Do not touch the saw chain with
CAUTION:
bare hands. Always wear gloves when handling
the saw chain.
Installing or removing saw chain
The saw chain and the guide bar
CAUTION:
are still hot just after the operation. Let them cool
down enough before carrying out any work on
the tool.
Carry out the procedure of install-
CAUTION:
ing or removing saw chain in a clean place free
from sawdust and the like.
Installing the saw chain
To install 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 nut.
► Fig.10: 1. Sprocket cover 2. Chain adjusting screw
3. Retaining nut
3.
Remove the sprocket cover.
4.
Check the direction of the saw chain. Match the
direction of the saw chain with that of the mark on the
chain saw body.
► Fig.11: 1. Mark on chain saw body
5.
Fit one end of the saw chain on the top of the
guide bar.
6.
Fit the other end of the saw chain around the
sprocket, then attach the guide bar to the chain saw
body, aligning the hole on the guide bar with the pin on
the chain saw body.
► Fig.12: 1. Sprocket 2. Hole
7.
Insert the protrusion and the pin on the sprocket
cover to the chain saw body, and then close the cover
so that the bolt and pin on the chain saw body meet
their counterparts on the cover.
► Fig.13: 1. Protrusion 2. Sprocket cover 3. Bolt
4. Pin
8.
Tighten the retaining nut to secure the sprocket
cover, then loosen it a bit for tension adjustment.
► Fig.14: 1. Retaining nut
After installing the saw chain, adjust the saw chain
tension by referring to the section for adjusting saw
chain tension.

Removing the saw chain

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 nut.
► Fig.15: 1. Chain adjusting screw 2. Retaining nut
3.
Remove the sprocket cover then remove the saw
chain and guide bar from the chain saw body.

Adjusting saw chain tension

Do not tighten the saw chain too
CAUTION:
much. Excessively high tension of saw chain may
cause breakage of saw chain and wear of the guide
bar.
A chain which is too loose can
CAUTION:
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 nut a bit to loosen the
sprocket cover lightly.
► Fig.16: 1. Retaining nut
3. Lift up the guide bar tip slightly and adjust the
chain tension. Turn the chain adjusting screw clockwise
to tighten, turn it counterclockwise to loosen.
For chain blade 90PX and 91PX:
Tighten the saw chain until the lower side of the saw
chain fits in the guide bar rail as illustrated.
► Fig.17: 1. Guide bar 2. Saw chain 3. Chain adjust-
ing screw
For chain blade 25AP:
Tighten the saw chain so that the gap between the cen-
ter of the lower side of the guide bar and the saw chain
becomes approximately 1 mm to 2 mm.
4.
Keep holding the guide bar lightly and tighten the
sprocket cover.
For chain blade 90PX and 91PX:
Make sure that the saw chain does not loose at the
lower side.
For chain blade 25AP:
Make sure that the gap between the center of the lower
side of the guide bar and the saw chain is approximately
1 mm to 2 mm.
5.
Tighten the retaining nut to secure the sprocket
cover.
► Fig.18: 1. Retaining nut
16 ENGLISH