English
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Spark Plug
L
H
If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
LA
Fine Tuning for Operation in
Mountains or at Sea Level
Fit a new spark plug after approx. 100
operating hours or earlier if the
electrodes are badly eroded.
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
N
N
Turn high speed screw (H)
counterclockwise as far as stop (no
more than 3/4 turn).
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
unfavorable running conditions (mostly
at part throttle etc.) affect the condition
of the spark plug. These factors cause
deposits to form on the insulator nose
which may result in trouble in operation.
Turn the low speed screw (L)
carefully clockwise as far as stop,
then turn it back 1 turn.
N
N
Check the standard setting.
Warm up the engine.
Start and warm up the engine.
At high altitude
Turn high speed screw (H)
N
Removing the spark plug
Adjusting Idle Speed
clockwise (leaner) – no further than
stop.
Engine stops while idling
If the setting is too lean there is a
risk of engine damage due to
insufficient lubrication and
overheating.
N
N
Check the standard setting.
Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly.
At sea level
Turn high speed screw (H) slightly
counterclockwise (richer) – no
further than stop.
2
N
Erratic idling behavior, engine stops
even though setting of LA screw has
been corrected, poor acceleration
N
N
Pull off the spark plug boot (1)
vertically.
Idle setting is too lean
Unscrew the spark plug (2).
N
Turn the low speed screw (L) slowly
counterclockwise until the engine
runs and accelerates smoothly.
Erratic idling behavior
Idle setting is too rich
N
Turn the low speed screw (L)
clockwise until the engine runs and
accelerates smoothly.
SR 430, SR 450
31
| Categories | Backpack Sprayer Manuals, Blower Vacuum and Sweeper Manuals, STIHL Backpack Sprayer Manuals, STIHL Blower and Vacuum Manuals |
|---|---|
| Tags | STIHL SR 430, STIHL SR 450 |
| 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, Blower Vacuum |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
(1 votes, average: 4 out of 4)
Lawn and Garden readers have rated STIHL SR 430 450 Blower Power Sprayer Owners Manual 4.0 out of 4.0 based on 1 product reviews. Works great only have a couple a problem with the spark arrester along the way other Than that it's ran for a champ for me for almost 2 years now