english
Standard Setting
Rule of thumb
Adjusting Idle Speed
:
Turn high speed screw (H) about
:
:
:
Shut off the engine.
Check chain tension.
It is usually necessary to change the
setting of the idle speed screw (LA)
after every correction to the low speed
screw (L).
1/4
turn for every 1000m (3300 ft)
change in altitude.
Check the air filter and clean or
Conditions for adjustment
replace as necessary.
:
:
Carry out standard setting.
Check spark arresting screen* and
clean or replace as necessary.
Check adjustment of the throttle
cable and readjust if necessary –
see "Adjusting the Throttle Cable".
:
Warm up engine for about 5
:
:
Warm up engine for about 5
minutes.
minutes.
Engine stops while idling
:
Open the throttle wide.
:
Turn idle speed screw (LA) slowly
clockwise until the engine runs
smoothly – chain must not rotate.
Turn high speed screw (H)
counterclockwise (max. 3/4 turn)
as far as stop.
At high altitude
:
:
:
Turn high speed screw (H) clock-
wise (leaner) no further than stop
until there is no noticeable increase
in engine speed.
Chain rotates when engine is idling
Carefully screw the low speed
screw (L) down onto its seat. Then
Turn idle speed screw (LA) slowly
counterclockwise until chain stops
rotating and then turn the screw
about another 1/2 to 1 turn in the
same direction.
:
open it one turn counterclockwise.
:
:
Start and warm up the engine.
At sea level
Adjust idle speed with the idle speed
screw (LA) so that the chain does
not rotate.
:
Turn high speed screw (H) counter-
clockwise (richer) no further than
stop until there is no noticeable
increase in engine speed.
Erratic idling behavior, engine stops
even though setting of LA screw is
correct, poor acceleration
Fine Tuning
It is possible that maximum engine
speed may be reached with the
standard setting in each case.
A slight correction of the setting of the
high speed screw (H) may be necessary
if engine power is not satisfactory when
operating at high altitude or at sea level.
Idle setting too lean:
:
Turn low speed screw (L)
counterclockwise (about 1/4 turn)
until the engine runs and
accelerates smoothly.
*
see "Guide to Using this Manual”
30
HT 70, HT 75
| Categories | Stihl Tiller Cultivator Manuals, Tiller Cultivator Manuals |
|---|---|
| Tags | STIHL HT 70, STIHL HT 75 |
| 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, Chainsaw |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)