Stihl BG 56 Manual De Instrucciones página 22

Engine stops while idling
: Check standard setting.
: Turn the idle speed screw (LA)
clockwise until the engine runs
smoothly.
Erratic idling behavior, poor
acceleration
(even though low speed screw is open 1
full turn)
Idle setting too rich:
: Turn low speed screw (L) slowly
clockwise until the engine runs and
accelerates smoothly.
Erratic idling behavior
Idle setting too lean:
: Turn low speed screw (L) slowly
counterclockwise until the engine
runs and accelerates smoothly.
BG 56, BG 66, BG 66 C, BG 86, SH 56, SH 86
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 observance 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"
English / USA
Checking the Spark Plug
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.
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