Makita BUC250 Bedienungsanleitung Seite 12

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. The oil tank capacity is 80 ml.
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
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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
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chain saws or oil available in market.
Never use oil including dust and particles or
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volatile oil.
When pruning trees, use botanical oil. Mineral oil
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may harm trees.
Never force the chain saw when pruning trees.
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Before cutting out, make sure that the provided oil
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tank cap is screwed in place.
Fig.17
Hold the chain saw away from the tree. Start it and wait
until lubrication on saw chain is adequate.
Bring the lower guide into contact with the branch to be
cut before switching on. Cutting without bringing the
lower guide into contact with the branch 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
The first time user should, as a minimum practice, do
cutting logs on a saw-horse or cradle.
Pruning trees
Fig.18
CAUTION:
Keep all parts of the body away from the saw chain
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when the motor is operating.
Hold the chain saw firmly with both hands when
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the motor is running.
Do not overreach. Keep proper footing and
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balance at all times.
Bring the lower guide into contact with the branch to be
cut before switching on. Cutting without bringing the
lower guide into contact with the branch may cause the
guide bar to wobble, resulting in injury to operator.
Fig.19
When cutting thick branches, first make a shallow
undercut and then make the finish cut from the top.
Fig.20
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.
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Fig.21
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.22
For bucking cuts, rest the serrated rail 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 serrated rail as a pivot.
Continue the cut by applying slight pressure to the front
handle, easing the saw back slightly. Move the serrated
rail further down the timber and raise the front handle
again.
When making several cuts, switch the chain saw off
between cuts.
Fig.23
CAUTION:
If the upper edge of the bar is used for cutting, the
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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.24
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.
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A hazard is presented by the risk of kick-back.
When limbing, support the chain saw on the trunk if
possible. Do not cut with the tip of the bar, as this
presents a risk of kickback.
Pay particular attention to branches under tension. Do
not cut unsupported branches from below.
Do not stand on the felled trunk when limbing.
Burrowing and parallel-to-grain cuts
CAUTION:
Burrowing and parallel-to-grain cuts may only be
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carried out by persons with special training. The
possibility of kickback presents a risk of injury.
Fig.25
Perform parallel-to-grain cuts at as shallow an angle as
possible. Carry out the cut as carefully as possible, as
the serrated rail cannot be used.
Felling
CAUTION:
Felling work may only be performed by trained
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persons. The work is hazardous.
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