Stihl 056 Instruction Manual - Page 20

Maintenance and Repair - av

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apply the chain saw directly behind the uncut band and swing it so the hinge wood is not cut. Make sure to move the saw around the log with the guide bar in a horizontal position. If the log diameter is exceptionally large, a piece of heartwood may be left uncut. In such instances, make a heartshaped cut by plunging the saw into the felling cut. This technique can also be used with "problem" timber (oak or beech) to prevent tough heartwood from tearing and to ensure proper control of the felling direction. With deciduous woods, the heart cut is often performed too, in order to ease the stress in the log and to prevent splinters in the middle of the uncut band from being torn out. Maintenance and Repair Do not attempt any maintenance or repair work not described in the instruction manual. Have such work performed at your STIHL Service Shop. Always stop the engine before doing any service or repair work. War Ing l Do not modify a chain saw in any way as this is dangerous. Check the tank caps for tightness regularly and inspect the ignirtion cable and the spark plug connector. The spark plug should be the specified make and type. Check the AV-buffers and. replace the buffers as a complete set only. Check the condition of the muffler to prevent fires and excessive noise that could result in hearing loss. Use a spark arrestor type of muffler and do not touch it with your bare skin. Be aware of the hazard of forest fires, especially during the dry season. Check the chain catching bolt for wear and replace it when- 18 ever it becomes damaged. Observe the information given in the chain filing instructions (page 31) to ensure safe use and correct care of the saw chain and guide bar (page 22). A saw chain must always be in good condition, correctly sharpened, properly tensioned and well-lubricated. Cutter teeth must be of equalleng,th, height, sharpness and shape. Make sure that the depth gauges are properly and equally set and shaped to reduce kickback. A dull chain stretches more readily and is thrown off the guide bar more easily. Newly replaced chain links must be of the same make and type as the originals and must be filed down to the same shape and wear pattern as the remaining components. Make sure theJe ~re no cutter teeth missing. For the filing and repairing of a STIHL chain, use only recommended STIHL tools. Inspect the chain for cracks and broken parts regularly - a poorly maintained chain may cause kickback. The engine must be shut off before checking and adjusting chain tension or changing a chain. Wear gloves when working with a saw chain or checking a saw chain for proper tension.

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18
apply the chain saw directly behind the uncut band and
swing it so the hinge wood
is
not cut. Make sure to move
the saw around the log with the guide bar
in
a horizontal
position.
If the log diameter is exceptionally large, a piece of heart-
wood may be left uncut. In such instances, make a heart-
shaped cut by plunging the saw into the felling cut.
This technique can also be used with "problem" timber
(oak or beech) to prevent tough heartwood from tearing
and
to
ensure proper control of the felling direction. With
deciduous woods, the heart cut is often performed too, in
order
to
ease the stress
in
the log and to prevent splinters
in
the middle of the uncut band from being torn out.
Maintenance and Repair
Do
not attempt any maintenance or repair work
not
described
in
the instruction
manual.
Have such work
performed at your STIHL Service Shop. Always stop the
engine before doing any service or repair work. War
Ing
l
Do
not modify a chain saw
in
any way as this is dangerous.
Check the tank caps for tightness regularly and inspect
the ignirtion cable and the spark plug connector. The spark
plug should be the specified make and type. Check the
AV-buffers
and.
replace the buffers as a complete set only.
Check the condition of the muffler to prevent fires and
excessive noise that could result
in
hearing loss. Use a
spark arrestor type of muffler and do not touch it with your
bare skin. Be aware of the hazard of forest fires, especially
during the dry season.
Check the chain catching bolt for wear and replace it when-
ever it becomes damaged.
Observe the information given
in
the chain filing instruc-
tions (page
31)
to ensure safe use and correct care of the
saw chain and guide bar (page 22). A saw chain must
always be
in
good condition, correctly sharpened, properly
tensioned and well-lubricated. Cutter teeth must be of
equalleng,th, height, sharpness and shape.
Make sure that the depth gauges are properly and equally
set and shaped
to
reduce kickback. A dull chain stretches
more readily and is thrown off the guide bar more easily.
Newly replaced chain links must be of the same make
and
type as the originals and must be filed down to the same
shape and wear pattern as the remaining components.
Make sure
theJe
~re
no
cutter teeth missing. For the filing
and repairing of a STIHL chain, use only recommended
STIHL tools. Inspect the chain for cracks and broken parts
regularly - a poorly maintained chain may cause kickback.
The engine must be shut off before checking and adjusting
chain tension or changing a chain. Wear gloves when
working with a saw chain or checking a saw chain for
proper tension.