English / USA
Adjusting the Carburetor
Standard Setting
Fine Tuning for Operation in
Mountains
:
:
:
Shut off the engine.
Check chain tension.
A slight correction of the setting if the
high speed screw (H) may be necessary
if the engine does not run satisfactorily
when operating at high altitude.
Check the air filter and replace it if
necessary.
:
:
Check adjustment of the throttle
cable and readjust if necessary –
see “Adjusting the Throttle Cable”.
Rule of thumb
L
1
H
Turn the high speed screw (H)
about one eighth of a turn for every
3300ft (1000 m) change in altitude.
Check the spark arresting screen
and clean or replace if necessary.
LA
H = Turn the high speed screw (H)
:
:
:
Check the standard setting.
Warm up the engine.
counterclockwise as far as stop –
3
no more than /4 turn
Turn the high speed screw (H)
slightly clockwise (leaner) – no
further than stop.
:
Carefully screw the low speed
screw (L) down onto its seat
(clockwise) and then turn it 1 full
turn counterclockwise.
:
:
Start and warm up the engine.
The carburetor comes from the factory
with a standard setting.
Adjust idle speed with the idle speed
screw (LA) so that the chain does
not run.
This settingprovides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
correct the setting of the high speed
screw within fine limits.
30
HT 250
| Categories | Stihl Tiller Cultivator Manuals, Tiller Cultivator Manuals |
|---|---|
| Tags | STIHL HT 250 |
| 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, Tiller Cultivator |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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