Operating and maintenance information
ENGLISH 19
Initially, it is best to set the hood down at the back
recess for the primer and the choke lever. For this, it
may prove beneficial to push the rear handle back
slightly - but never use force!
Push the hood together gently to fit it accurately into the
front groove at the hand guard on the starter side of the
casing. If necessary, hold the hand guard with activated
chain brake in its play position. Before tightening the
fixing screw (16), check that the hood fully engages in
the groove of the main casing.
11.3 Carburettor settings
The carburettor is preset to the optimum settings for the
device at the factory. Depending on the particular
location where the chainsaw is used (mountains, flat
country) it may be necessary to adjust the idling
settings via the idle stop screw "T" (24).
The adjusting screws for the idling mixture "L" and the
full-load mixture "H" (25) must only be adjusted by an
authorised workshop.
When the idling settings are correct the engine should
run smoothly at idle without the saw chain being driven.
Corrective adjustments to the average idle speed
indicated in the technical data can be made as follows
via the idle stop screw "T" – ideally with the aid of a
tachometer:
• If the idle speed is too high (particularly if the saw
chain is already driven without the throttle being
operated), slightly open up the idle stop screw "T"
by turning it anti-clockwise.
• If the idle speed is too low (i.e. the engine keeps
stopping at idle), slightly close the idle stop screw
"T" by turning it clockwise until the engine runs
evenly.
•
The saw chain must never be driven while the
engine is idling.
If the idling speed cannot be set correctly with the idling
end-stop screw "T", request an authorised service
centre to tune the carburettor.
The following instructions are for authorised service
shops
D-CUT carburettors:
Use the D-CUT carburettor key to adjust the idle mixture
screw "L" and the full load mixture screw "H".
Carburettors with limiter caps:
The regulating screws for idle mixture and full load
mixture can only be adjusted in a limited range.
Clean the air filter before adjusting the low speed screw!
Let the engine run warm before adjusting the engine
speed.
The carburettor is tuned for optimum engine
performance. Use a rev counter to tune the carburettor
correctly!
Do not adjust the engine to a higher speed. Excessive
engine speed can lead to major engine damage!
11.4 Maintenance of the chain brake
Check for ease of movement and correct operation on a
daily basis. Remove any resin, sawdust and dirt.
Visible joints and bearings should be lubricated with
grease or temperature-resistant engine oil.
• Chain brake function test (chapter 7.).
11.5 Vibration damping
If you find that vibrations on the handles worsen
significantly with time in comparison to when the
chainsaw was new, check the damping elements
(rubber-bonded metal mountings) for damage and
replace them as required.
Working with the chainsaw while the vibration
damping system is not working properly can
cause health problems.
Fig. 19
Fig. 20
Fig. 21
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