Makita DUC204Z - Инструкция по эксплуатации - Страница 15

15 ENGLISH

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 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.9:

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.
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.10:

1.

 Sprocket 

2.

 Hole

4.

Insert the protrusion on the sprocket cover to the 

chain saw body, and then close the cover so that the 

bolt and pins on the chain saw body meet their counter-

parts on the cover.

► 

Fig.11:

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.

► 

Fig.12:

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, wear of the guide bar 

and breakage of the adjusting dial.

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.13:

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.14:

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.15:

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.

► 

Fig.16:

1.

 Screw 

2.

 Spike bumper

OPERATION

Lubrication

Saw chain is automatically lubricated when the tool is in 

operation. Check the amount of remaining oil in the oil 

tank periodically through the oil inspection window.

To refill the tank, lay the chain saw on its side and 

remove the oil tank cap. The proper amount of oil is 140 

ml. After refilling the tank, make sure that the oil tank 

cap is tightened securely.

► 

Fig.17:

1.

 Oil tank cap 

2.

 Oil inspection window

After refilling, hold the chain saw away from the 

tree. Start it and wait until lubrication on saw chain is 

adequate.

► 

Fig.18