English / USA
Winter Operation
FS 400, 450, 480
Adjusting Idle Speed
Engine stops while idling
Erratic idling behavior, poor
acceleration
3
:
Carry out standard setting with the
low speed screw (L).
:
Carry out standard setting with the
low speed screw (L).
Idle setting too lean:
:
Turn the idle speed screw (LA)
clockwise until the engine runs
smoothly – the cutting tool must not
rotate.
:
Turn low speed screw (L)
counterclockwise until the engine
runs and accelerates smoothly.
1
2
It is usually necessary to change the
setting of the idle speed screw (LA)
after every correction to the low speed
screw (L).
Cutting tool rotates when engine is
idling
3
:
Turn the idle speed screw (LA)
counterclockwise until the cutting
tool stops rotating – then turn the
screw about another half to one full
turn in the same direction from that
position.
Fine tuning the carburetor for
operation at high altitude
A slight correction may be necessary if
the engine does not run satisfactorily:
2
1
:
:
:
Check standard setting.
Warm up the engine.
Mount the "Intake Air Preheating" kit
4128 007 1001* to prevent the air filter
and carburetor icing up at temperatures
below +10°C/ +50°F and in powdery or
drifting snow.
Turn the high speed screw (H)
clockwise (leaner).
:
:
Remove the standard air filter (1).
Install the special filter (2) for winter
operation.
:
Push cover (3) up against the
underside of the filter cover. This is
the winter position (upper
illustration).
*
see "Guide to Using this Manual"
FS 300, FS 350, FS 400, FS 450, FS 480
33
| Categories | Blower Vacuum and Sweeper Manuals, STIHL Trimmer Manuals, Trimmer Manuals |
|---|---|
| Tags | STIHL FS 300, STIHL FS 350, STIHL FS 400, STIHL FS 450, STIHL FS 480 |
| Download File |
|
| Language | English, Español |
| Product Brand | STIHL. Stihl Inc, USA - Corporate phone: (757) 486-9100. International Support Information: http://stihl.com Email: info@stihl.com, Trimmer |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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