Always switch off the motor of the chainsaw
before moving from tree to tree.
7.3 Kickback
The term "kickback" describes what happens
when the running chainsaw suddenly kicks
upward and backward. Usually this is caused
by contact between the tip of the bar and the
workpiece or by the saw chain becoming trapped.
In the event of kickback, large forces occur
suddenly and violently. As a result, the chainsaw
usually reacts uncontrollably. This can often result
in very serious injuries to the worker or persons
in the vicinity. The risk of kickback is particularly
great when performing cross cuts, angled cuts
and longitudinal cuts, as it is not possible to use
the claw stop on these cuts. You should therefore
avoid these cuts as far as possible and take
particular care when they are unavoidable.
The risk of kickback is at its greatest when the
saw is positioned for a cut in the region of the tip
of the bar, as the leverage eff ect is greatest there
(Fig. 24). It is therefore safest to position the saw
fl at and as close as possible to the claw stop
before making the cut (Fig. 25).
Warning!
•
Make sure that the chain tension is always
correctly adjusted.
•
Only use a chainsaw if it is in perfect working
order.
•
Only work with a saw chain that has been
properly sharpened in accordance with the
instructions.
•
Never operate the saw above shoulder height.
•
Never cut with the upper edge or the tip of the
bar.
•
Always hold the chainsaw firmly with both
hands.
•
Whenever possible, use the claw stop as a
leverage point.
Cutting wood which is under tension
Special care is required when cutting wood which
is under tension. Cutting wood which is under
tension can release the tension, causing the
wood to react out of control. In the worst case
this could result in extremely severe or even fatal
injuries (Fig. 26-28).
This type of work must be performed only by
specially trained persons.
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8. Cleaning, maintenance and
ordering spare parts
Hazard!
•
Remove the battery each time before
cleaning.
•
Never immerse the equipment in water or
other liquids in order to clean it.
8.1 Cleaning
•
Regularly clean the tensioning mechanism by
blowing it out with compressed air or cleaning
it with a brush. Do not use any tools for
cleaning.
•
Keep the handles free of oil so that you can
maintain a firm grip.
•
Clean the equipment as required with a damp
cloth and, if necessary, mild washing up
liquid.
•
If you are not going to use the chainsaw for an
extended period of time, remove the chain oil
from the tank. Briefly immerse the saw chain
and the cutter bar into an oil bath and then
wrap them in oil paper.
8.2 Maintenance
Replacing the chain and bar
The bar needs to be replaced if
•
the guide groove of the bar is worn;
•
the nose sprocket in the bar is damaged or
worn.
Remove the adapter plate (Item 19) from the bar
as shown in Fig. 29. Now fi t the adapter plate to
the new bar. Proceed as described in the section
"Assembly of the bar and the saw chain".
Checking the automatic chain lubrication
You should check the operation of the automatic
chain lubrication system on a regular basis
in order to guard against overheating and the
damage this can cause to the bar and the chain.
Point the tip of the bar at a smooth surface (a
board or a cut tree face) and allow the chainsaw
to run.
If you see a growing oil stain on the smooth
surface, the automatic chain lubrication system
is working properly. If no clear oil trace is
evident then please refer to the corresponding
instructions in "Troubleshooting". If the information
contained there still fails to remedy the situation,
please contact our service department or another
similarly qualifi ed workshop.
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