Adjusting Saw Chain Tension - Makita DUC256 Instruction Manual

4. 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.
1
4
4
► 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

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. Release the chain brake by pulling the front hand
guard.
2.
sprocket cover lightly.
2
3
► 1 . Retaining nut
3.
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.
1
► 1 . Guide bar 2. Saw chain 3. Chain adjusting 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.
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.
13 ENGLISH
Loosen the retaining nut a bit to loosen the
Lift up the guide bar tip slightly and adjust the
Keep holding the guide bar lightly and tighten the
1
1
2
3