Adjusting The Carburetor; Catalytic Converter - Stihl BG 46 Manual De Instrucciones

Adjusting the Carburetor

(With idle speed screw LD)
LD
+
-
The carburetor is set at the factory to
provide an optimum fuel-air mixture
under all operating conditions.
BG 46
Standard setting
:
Check the air filter and replace if
necessary.
:
Start and warm up the engine.
:
Carefully screw the idle speed
screw (LD) down onto its seat
counterclockwise (left-hand thread).
Then open it two full turns clockwise
(standard setting).
Engine stops when engine is idling:
Carry out standard setting
(open the LD screw two full turns)
:
Rotate idle speed screw (LD) about
one half turn clockwise until the
engine runs smoothly.
Erratic idling behavior, poor
acceleration:
Carry out standard setting
(open the LD screw two full turns)
:
Rotate idle speed screw (LD) about
one half turn counterclockwise.
english / USA

Catalytic Converter

Units with a catalytic converter* may
only be operated with unleaded
gasoline and STIHL two cycle engine
oil or equivalent quality two cycle engine
oils in a mix ratio of 50:1 (see chapter
"Fuel").
The catalylic converter in the muffler
reduces noxious emissions in the
exhaust gas.
Correct adjustment of the carburetor (if
adjustable) and observancen of the
specified mix ratio of gasoline and two
cycle engine oil are essential to
minimize harmful exhaust emissions
and ensure a long catalyst service life.
* see "Guide to Using this Manual"
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