A. CARBURETOR ADJUSTMENT.
The carburetor is preset at the factory. This is the
optimum setting under the barometric pressure and
climatic conditions at the factory and is suitable for
most operating sites.
It ensures that your machine will run smoothly, be
fuel efficient, operate reliably and produce low
emissions.
If the en).line runs unsatisfactorily at high altitudes
or at sea level, slight readjustment of the carburetor
may be necessary:
1 . Check the air filter and clean it if necessary.
2. Check the spark arresting screen (if fitted) and
clean it if necessary.
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3. Start the engine and adjust the idling speed
correctly with the idle speed adjusting screw
(Ref. I).
4. Warm up the engine.
5. Adjusting th_e idle speed:
It is usually necessary to change the setting of
the idle speed adjusting screw (Ref. I) after
every correction to the low speed adjusting
screw (Ref. L).
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MAINTENANCE
6. Proper idling speed:
BLL 2600 .......... 2,800-3,000 min-
1
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7. The engine stops while idling:
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Turn the idle speed adjusting screw (Ref. L)
clockwise until the engine runs smoothly.
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8. Erratic idling behavior, poor acceleration:
The idle setting is too lean. Turn the low speed
adjusting screw (Ref. L) counterclockwise until
the engine runs and accelerates smoothly.
