English
N
N
The low speed screw (H) is 3/4 turn
open.
N
N
Check the standard setting.
Warm up the engine.
Adjusting the Carburetor
Start and warm up the engine.
The carburetor comes from the factory
with a standard setting.
At high altitude
Turn high speed screw (H)
Adjusting Idle Speed
N
This settingprovides an optimum fuel-air
mixture under most operating
conditions.
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.
With this carburetor it is only possible to
adjust the high speed and low speed
screws within fine limits.
Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly.
At sea level
Turn high speed screw (H)
counterclockwise (richer) – no
further than stop.
Standard Setting
Erratic idling behavior, engine stops
even though setting of LA screw has
been corrected, poor acceleration
N
N
N
Stopping the Engine
Check the air filter and replace it if
necessary.
Idle setting is too lean
N
Turn the low speed screw (L)
counterclockwise, no further than
stop, until the engine runs and
accelerates smoothly.
N
Check that the throttle cable is
properly adjusted – readjust if
necessary – see chapter on
"Adjusting the Throttle Cable".
Erratic idling behavior
N
Check the spark arresting screen
(country-specific) in the muffler and
clean or replace if necessary.
Idle setting is too rich
N
Turn the low speed screw (L)
clockwise, no further than stop, until
the engine runs and accelerates
smoothly.
H
L
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Fine Tuning for Operation in
Mountains or at Sea Level
N
N
Carefully turn both adjusting screws
counterclockwise as far as stop:
The high speed screw (H) is 3/4 turn
open.
A slight correction of the setting may be
necessary if engine power is not
satisfactory when operating at high
altitude or at sea level.
BR 500, BR 550, BR 600
19
| Categories | Blower Vacuum and Sweeper Manuals, STIHL Blower and Vacuum Manuals |
|---|---|
| Tags | STIHL BR 500, STIHL BR 550, STIHL BR 600 |
| 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 |
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