Operation - Makita DUC204 Betriebsanleitung

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.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
NOTICE:
When filling the chain oil for the first time,
or refilling the tank after it has been completely emp-
tied, add oil up to the bottom edge of the filler neck.
The oil delivery may otherwise be impaired.
NOTICE:
Use the saw chain oil exclusively for Makita
chain saws or equivalent oil available in the market.
NOTICE:
Never use oil including dust and parti-
cles or volatile oil.
NOTICE:
When pruning trees, use botanical oil.
Mineral oil may harm trees.
NOTICE:
Before the cutting operation, make sure
that the provided oil tank cap is screwed in place.
WORKING WITH THE CHAIN SAW
CAUTION:
Keep all parts of the body away
from the saw chain when the motor is operating.
CAUTION:
Hold the chain saw firmly with
both hands when the motor is running.
CAUTION:
Do not overreach. Keep proper
footing and balance at all times.
NOTICE:
Never toss or drop the tool.
NOTICE:
Do not cover the vents of the tool.
Pruning trees
Bring the chain saw body into contact with the branch to be cut
before switching on. Otherwise it may cause the guide bar to
wobble, resulting in injury to operator. Saw the wood to be cut
by just moving it down by using the weight of the chain saw.
► Fig.19
If you cannot cut the timber right through with a single stroke:
Apply light pressure to the handle and continue sawing
and draw the chain saw back a little.
► Fig.20
When cutting thick branches, first make a shallow
undercut and then make the finish cut from the top.
► Fig.21
If you try to cut off thick branches from the bottom, the
branch may close in and pinch the saw chain in the cut.
If you try to cut off thick branches from the top without a
shallow undercut, the branch may splinter.
► Fig.22
15 ENGLISH