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Stihl FS 40 Notice D'emploi page 22

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English
Engine Management
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.
20
All manuals and user guides at all-guides.com
Adjusting the Carburetor
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
make corrections with the adjusting
screws within fine limits.
Standard Setting
N
Shut odd the engine.
N
Mount a cutting tool – we
recommend you use a mowing
head.
N
Check the air filter and replace the
element if necessary.
N
Have the spark arresting screen
(not all markets) checked – see
"Inspection and Maintenance by
Dealer"
N
Turn the high speed screw (H)
counterclockwise as far as stop
(max. 3/4 turn possible).
N
Turn the low speed screw (L)
counterclockwise as far as stop
(max. 3/4 turn possible).
N
Start and warm up the engine if
necessary.
N
Adjust idle speed with the idle speed
screw (LA) so that the cutting tools
does not turn.
Fine Tuning for Operation in
Mountains or at Sea Level
A slight correction of the setting may be
necessary if engine power is not
satisfactory when operating at high
altitude or at sea level.
N
Warm up the engine.
At high altitude
N
Turn high speed screw (H)
clockwise (leaner) – no further than
stop.
At sea level
N
Turn high speed screw (H)
counterclockwise (richer) – no
further than stop.
Adjusting Idle Speed
N
Warm up the engine.
Engine stops while idling
N
Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly – the cutting
attachment must not turn.
FS 40, FS 40 C, FS 50, FS 50 C

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Ce manuel est également adapté pour:

Fs 50