Makita DUC256 Manual De Instrucciones página 15

Carabiner (rope attachment point)
You can hang the tool by attaching the rope to the cara-
biner. Pull up the carabiner, and then tie it with the rope.
► Fig.10: 1. Carabiner
Spike bumper
The tool is equipped with the spike bumper as stan-
dard. For replacement of the spike bumper, ask Makita
Authorized Service Centers.
When you perform the cutting operation, engage the
spike bumper with the trunk and use it as a lever.
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.
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 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
chain saw body.
2. Fit one end of the saw chain on the top of the
guide bar.
3.
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.11: 1. Sprocket 2. Hole
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.
► Fig.12: 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.
(See the chapter on "Adjusting saw chain tension" for
procedure.)
► Fig.13: 1. Retaining nut
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.14: 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
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 nut a bit to loosen the
sprocket cover lightly.
► Fig.15: 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.16: 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.17: 1. Retaining nut
15 ENGLISH