English / USA
Spark Arresting Screen in
Muffler
At high altitude
: Turn the high speed screw (H)
Cutting blades run when engine is
idling
The spark arresting screen is an option
that is not fitted in all machines.
clockwise (leaner), no further than
stop, until there is no noticeable
increase in engine speed.
:
Turn idle speed screw (LA) slowly
counterclockwise until cutting
blades stop running and then turn
the screw about another 1/2 to 3/4
turn in the same direction
:
If the engine is low on power, check
the spark arresting screen in the
muffler.
At sea level
:
Wait for muffler to cool down.
:
Turn the high speed screw (H)
counterclockwise (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
1
It is possible that maximum engine
speed may be reached with the
standard setting in each case.
Idle setting too lean:
:
Turn low speed screw (L)
counterclockwise, no further than
stop, until the engine runs and
accelerates smoothly.
Adjusting Idle Speed
:
:
Move slide control to STOP-O.
Remove the screw (1).
It is usually necessary to change the
setting of the idle speed screw (LA)
after every correction to the low speed
screw (L).
Erratic idling behavior
Idle setting too rich:
:
Turn low speed screw (L) clockwise,
no further than stop, until the engine
runs and accelerates smoothly.
:
Warm up the engine for about 3
minutes.
3
Engine stops while idling
2
2
:
Turn idle speed screw (LA) slowly
clockwise until the engine runs
smoothly – the cutting blades must
not run.
:
:
Remove the screws (2).
Lift away the shroud (3).
HL 90 K
23
| Categories | Hedge Trimmer Manuals, STIHL Hedge Trimmer Manuals, Trimmer Manuals |
|---|---|
| Tags | STIHL HL 90 |
| 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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