Owner's Manual
6SXUVSURFNHW
Use a screwdriver to
•
remove the E-clip.
•
Pull washer, spur sprocket and
needle cage off the crankshaft.
Clean the crankshaft stub and
needle cage, and lubricate with
STIHL grease
(tube 0781 120 1111).
Reassemble with new spur sprocket -
After fitting the clutch drum, rotate
it about one turn to engage
oil pump drive -
refit washer and E-clip on the crankshaft.
Use only original STIHL chain
sprockets to ensure correct
operation of the chain brake.
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Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components
(e.g. carburation, ignition, timing and
valve or port timing) without the addition
of any major hardware.
The carburetor is set at the factory to
guarantee an optimum fuel-air mixture
under all operating conditions.
Emissions at idling speed and part-load
are kept to a minimum by reducing the
idle mixture.
•
Check the air filter and clean or re-
place it if necessary.
•
Check the spark arresting screen
and clean or replace it if necessary.
Carefully screw the low speed
screw / down onto its seat.
Now open it one turn counter-
clockwise (standard
setting, / )
•
Warm up the engine.
It is usually necessary to change the
setting of the idle speed screw/$
after every correction to the low speed
screw/.
Turn screws only very slightly and
carefully - even minor changes have a
noticeable effect on the engine’s running
behavior.
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Turn the idle speed screw /$ clockwise
until chain begins to run -
then back off the screw one quarter
of a turn.
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Turn the idle speed screw /$
counterclockwise until chain
stops running -
then turn screw another quarter turn in
the same direction.
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133BA022 KN
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