Operation; Maintenance - Makita DUC256 Instruction Manual

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

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, then
push the oil tank cap, and then remove the oil tank
cap. The proper amount of oil is 200 ml. After refilling
the tank, make sure that the oil tank cap is tightened
securely.
► Fig.18: 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.19
When filling the chain oil for the first
NOTICE:
time, or refilling the tank after it has been com-
pletely emptied, add oil up to the bottom edge of
the filler neck. The oil delivery may otherwise be
impaired.
Use the saw chain oil exclusively for
NOTICE:
Makita chain saws or equivalent oil available in
the market.
Never use oil including dust and parti-
NOTICE:
cles or volatile oil.
When pruning trees, use botanical oil.
NOTICE:
Mineral oil may harm trees.
Before the cutting operation, make sure
NOTICE:
that the provided oil tank cap is screwed in place.
WORKING WITH THE CHAIN SAW
Keep all parts of the body away
CAUTION:
from the saw chain when the motor is operating.
Hold the chain saw firmly with
CAUTION:
both hands when the motor is running.
Do not overreach. Keep proper
CAUTION:
footing and balance at all times.
Never toss or drop the tool.
NOTICE:
Do not cover the vents of the tool.
NOTICE:
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.20
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.21
When cutting thick branches, first make a shallow
undercut and then make the finish cut from the top.
► Fig.22
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.23
Carrying tool
Before carrying the tool, always apply the chain brake
and remove the battery cartridges from the tool. Then
attach the guide bar cover. Also cover the battery car-
tridge with the battery cover.
► Fig.24: 1. Guide bar cover 2. Battery cover

MAINTENANCE

Always be sure that the tool is
CAUTION:
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
Always wear gloves when perform-
CAUTION:
ing any inspection or maintenance.
Never use gasoline, benzine, thinner,
NOTICE:
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
15 ENGLISH