FS 300, FS 350, FS 380
English
76
N
Turn the high speed screw (H)
carefully clockwise until it is against
its seat, then turn it back 2 full turns.
N
Turn the low speed screw (L)
carefully clockwise as far as stop,
then turn it back 1 turn
Adjusting Idle Speed
N
Carry out standard setting.
N
Start and warm up the engine.
Engine stops while idling
N
Turn the idle speed screw (LA)
clockwise until the engine runs
smoothly – the cutting attachment
must not rotate.
Cutting attachment rotates when engine
is idling
N
Turn the idle speed screw (LA)
counterclockwise until the cutting
attachment stops moving and then
turn the screw another 1/2 to 1 full
turn in the same direction.
WARNING
If the cutting attachment continues to
rotate when the engine is idling, have
your machine checked and repaired by
your servicing dealer.
Erratic idling behavior, poor acceleration
(even though setting of LA screw is
correct).
Idle setting is too lean
N
Turn the low speed screw (L)
counterclockwise, no more than 1/2
turn, until the engine runs and
accelerates smoothly.
Erratic idling behavior
Idle setting is too rich
N
Turn the low speed screw (L)
clockwise, no more than 1/2 turn,
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).
Fine Tuning for Operation at High
Altitude
A slight correction of the setting may be
necessary if the engine does not run
satisfactorily:
N
Carry out standard setting.
N
Warm up the engine.
N
Turn high speed screw (H) slightly
clockwise (leaner) – no more than a
3/4 turn.
NOTICE
After returning from high altitude, reset
the carburetor to the standard setting.
If the setting is too lean there is a risk of
engine damage due to insufficient
lubrication and overheating.
255BA006 KN
H
L
255BA007 KN
LA
Summary of Contents for FS 350
Page 1: ... STIHL FS 300 350 380 Manual de instrucciones Instruction Manual ...
Page 2: ...E Manual de instrucciones 1 46 G Instruction Manual 47 90 ...
Page 93: ...FS 300 FS 350 FS 380 English 91 ...
Page 94: ...FS 300 FS 350 FS 380 English 92 ...
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