Maintenance - Makita BUC121 Bedienungsanleitung

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
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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.
Hold the chain saw away from the tree. Start it and wait
until lubrication on saw chain is adequate.
Bring the tip guide/lower guide into contact with the
branch to be cut before switching on. Cutting without
bringing the tip guide/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.
Pruning trees
Fig.12
Fig.13
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
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the motor is running.
Do not overreach. Keep proper footing and
•
balance at all times.
Bring the tip guide/lower guide into contact with the
branch to be cut before switching on. Cutting without
bringing the tip guide/lower guide into contact with the
branch may cause the guide bar to wobble, resulting in
injury to operator.
When cutting thick branches, first make a shallow
undercut and then make the finish cut from the top.
Fig.14
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.15
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.
Fig.16
Carrying tool
Fig.17
Always remove the battery cartridge from the tool and
overlap the guide bar with the scabbard before carrying
the tool. Also cover the battery cartridge with the battery
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cover.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed before attempting to
perform inspection or maintenance.
Always wear gloves
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inspection or maintenance.
Never use gasoline, benzine, thinner, alcohol or
•
the like. Discoloration, deformation or cracks may
result.
Sharpening the saw chain
CAUTION:
Always remove the battery cartridge and wear
•
safety gloves when performing work on the saw
chain.
Fig.18
Sharpen the saw chain when:
− Mealy sawdust is produced when damp wood is
cut;
− The chain penetrates the wood with difficulty, even
when heavy pressure is applied;
− The cutting edge is obviously damaged;
− The saw pulls to the left or right in the wood. The
reason for this behaviour is uneven sharpening of
the saw chain, or damage to one side only.
Sharpen the saw chain frequently, but remove only a
little material each time.
Two or three strokes with a file are usually sufficient for
routine resharpening. When the saw chain has been
resharpened several times, have it sharpened in a
MAKITA specialist repair shop.
File and file guiding
− Use a special round file (optional accessory) for
saw chains, with a diameter of 4 mm, to sharpen
the chain. Normal round files are not suitable.
Fig.19
− The file should only engage the material on the
forward stroke. Lift the file off the material on the
return stroke.
− Sharpen the shortest cutter first. The length of this
cutter is then the gauge dimension for all other
cutters on the saw chain.
− Guide the file as shown in the figure.
− The file can be guided more easily if a file holder
(accessory) is employed. The file holder has
markings for the correct sharpening angle of 30 °
(align the markings parallel to the saw chain) and
limits the depth of penetration (to 4/5 of the file
diameter).
Guide the file as shown in the figure.
− After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
11
when performing any