Operation - Makita DUC305 Instruction Manual

Adjusting the chain lubrication
You can adjust the oil pump feed rate with the adjusting
screw. The amount of oil can be adjusted using the
universal wrench.
► Fig.9: 1. Adjusting screw
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.
To install the saw chain, perform the following steps:
1. Make sure the direction of the chain. The arrow
mark on the chain shows the direction of the chain.
2. Fit in one end of the saw chain on the top of the
guide bar and the other end around the sprocket.
► Fig.10: 1. Sprocket
3.
Rest the guide bar in place on the chain saw.
4. Place the sprocket cover on the chain saw so that
the adjusting pin is positioned in a small hole on the
guide bar.
► Fig.11: 1. Sprocket cover 2. Guide bar 3. Hole
4. Adjusting pin
5.
Tighten the retaining nuts to secure the sprocket
cover, then loosen it a bit for tension adjustment.
(See the chapter on "Adjusting saw chain tension" for
procedure.)
► Fig.12: 1. Retaining nut
To remove the saw chain, perform the following steps:
1. Release the chain brake by pulling the front hand
guard.
Loosen the chain adjusting screw, then the retain-
2.
ing nuts.
► Fig.13: 1. Chain adjusting screw 2. Retaining nut
3. Sprocket cover
3. Remove the sprocket cover then remove the saw
chain and guide bar from the chain saw body.
Adjusting saw chain tension
CAUTION:
Carry out the procedure of install-
ing or removing saw chain in a clean place free
from sawdust and the like.
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 nuts a bit to loosen the
sprocket cover lightly.
► Fig.14: 1. Retaining nut
Lift up the guide bar tip slightly and adjust the
3.
chain tension. Turn the chain adjusting screw clockwise
to tighten, turn it counterclockwise to loosen.
Tighten the saw chain until the lower side of the saw
chain fits in the guide bar rail as illustrated.
► Fig.15: 1. Guide bar 2. Saw chain 3. Chain adjust-
ing screw
4. Keep holding the guide bar lightly and tighten the
retaining nuts to secure the sprocket cover.
► Fig.16: 1. Retaining nut
Make sure that the saw chain does not loose at the
lower side and the saw chain fits snugly against the
lower side of the bar.

OPERATION

Lubrication
CAUTION:
Do not operate the chain saw when
the tank is empty. Replenish the oil in due time before
the tank is empty.
CAUTION:
Prevent the oil from coming into
contact with the skin and eyes. Contact with the eyes
causes irritation. In the event of eye contact, flush the
affected eye immediately with clear water, then con-
sult a doctor at once.
CAUTION:
Never use waste oil. Waste oil con-
tains carcinogenic substances. The contaminants
in waste oil cause accelerated wear of the oil pump,
the bar and the chain. Waste oil is harmful to the
environment.
Saw chain is automatically lubricated when the tool is in
operation. Check the amount of remaining oil in the oil
tank periodically.
To fill the oil, perform the following steps:
1. Clean the area around the oil tank cap thoroughly
to prevent any dirt from entering the oil tank.
2. Lay the chain saw on its side and remove the oil tank cap.
3. Fill the oil tank with the oil. The proper amount of
oil is 200 ml.
15 ENGLISH