13 ENGLISH
2.
Loosen the retaining nut a bit to loosen the
sprocket cover lightly.
1
►
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.
1
2
3
►
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.
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.
1
►
1.
Retaining nut
Make sure the saw chain fits snugly against the lower
side of the bar.
Spike bumper
Optional accessory
When cutting thick branches, using the spike bumper is
recommended. To install the spike bumper, perform the
following steps:
1.
Remove the sprocket cover, saw chain, and guide
bar.
2.
Align the holes of the spike bumper with the holes
on the chain saw body, and then tighten the screws
firmly.
1
2
►
1.
Screw
2.
Spike bumper