Stihl GS 461 Notice D'emploi page 20

English
► Turn high speed screw (H) counterclockwise
as far as stop (no more than 3/4 turn).
► Turn the low speed screw (L) clockwise as far
as stop, then turn it back 1/4 turn.
16.3 Adjusting Idle Speed
Before starting, open the shut-off cock fully so
that water flows to the diamond abrasive chain –
never allow chain to run dry.
► Carry out the standard setting.
► Start and warm up the engine.
16.3.1 Engine stops while idling or chain runs
while engine is idling
► Turn the idle speed screw (LA) clockwise as
far as stop or until the chain begins to run –
then turn the screw back 1 1/2 turns.
20
WARNING
If the chain continues moving when the engine is
idling, have your machine checked and repaired
by your servicing dealer.
16.3.2 Erratic idling behavior, poor accelera‐
tion (even though low speed screw is
open 1/4 turn)
Idle setting is too lean
► Turn the low speed screw (L) counterclock‐
wise until the engine runs and accelerates
smoothly.
It is usually necessary to change the setting of
the idle speed screw (LA) after every correction
to the low speed screw (L).
16.4 Fine Tuning for Operation at
High Altitude
A slight correction of the setting may be neces‐
sary if engine does not run satisfactorily:
► Carry out the standard setting.
► Warm up the engine.
► Turn high speed screw (H) slightly clockwise
(leaner) – no further than stop.
16 Adjusting the Carburetor
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