Operation - Makita DUC252 Instruction Manual

OPERATION

CAUTION:
Do not cover vents, or it may cause overheating and
damage to the tool.
Lubrication
Fig.18
Saw chain is automatically lubricated when the tool is in
operation.
Check the amount of remaining oil in the oil tank
through the oil inspection window.
To refill the tank, remove the cap from the oil tank
opening.
After refilling the tank, always screw the provided oil
tank cap on the chain saw.
CAUTION:
When filling the chain saw with chain oil for the
•
first time, or refilling the tank after it has been
completely emptied, add oil up to the bottom edge
of the filler neck. The oil delivery may otherwise be
impaired.
As a saw chain oil, use oil exclusively for Makita
•
chain saws or oil available in market.
Never use oil including dust and particles or
•
volatile oil.
When pruning trees, use botanical oil. Mineral oil
•
may harm trees.
Never force the chain saw when pruning trees.
•
Before cutting out, make sure that the provided oil
•
tank cap is screwed in place.
Fig.19
Hold the chain saw away from the tree. Start it and wait
until lubrication on saw chain is adequate.
Bring the spike bumper 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.
WORKING WITH THE CHAIN SAW
CAUTION:
The first time user should, as a minimum practice,
•
do cutting logs on a saw-horse or cradle.
When sawing precut timber use a safe support
•
(saw horse or cradle). Do not steady the
workpiece with your foot, and do not allow anyone
else to hold or steady it.
Secure round pieces against rotation.
•
Pruning trees
Fig.20
CAUTION:
Keep all parts of the body away from the saw
•
chain when the motor is operating.
Hold the chain saw firmly with both hands when
•
the motor is running.
Do not overreach. Keep proper footing and
•
balance at all times.
Bring the spike bumper into contact with the branch to
be cut before switching on. Cutting without bringing the
spike bumper into contact with the branch may cause
the guide bar to wobble, resulting in injury to operator.
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
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; then apply the
spike a little lower and finish the cut by raising the
handle.
Bucking
Fig.24
For bucking cuts, rest the spike bumper shown in the
figure on the wood to be cut.
With the saw chain running, saw into the wood, using
the top handle to raise the saw and the front one to
guide it. Use the spike bumper as a pivot.
Continue the cut by applying slight pressure to the front
handle, easing the saw back slightly. Move the spike
bumper further down the timber and raise the front
handle again.
When making several cuts, switch the chain saw off
between cuts.
Fig.25
CAUTION:
If the upper edge of the bar is used for cutting, the
•
chain saw may be deflected in your direction if the
chain becomes trapped. For this reason, cut with
the lower edge, so that the saw will be deflected
away from your body.
Fig.26
Cut wood under tension on the pressure side (A) first.
Then make the final cut on the tension side (B). This
prevents the bar from becoming trapped.
Limbing
CAUTION:
Limbing may only be performed by trained
•
persons. A hazard is presented by the risk of kick-
back.
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