CARBURETTOR CHARACTERISTICS
Specification Desc./Quantity
Dell'Orto type SHB 22/22
Diffuser mm. 22
Maximum jet 73/100 long
Minimum jet 55/100 long
Minimum fixed air 100/100
Maximum fixed air 170/100
Starter jet 70/100
CAUTION
CHECK THAT THE CARBURETTOR IS WELL LOCKED, THAT THE VALVE COVER AND THE FIT-
TINGS OF THE ADMISSION DUCT ARE NOT LOOSE, IN ORDER TO AVOID HARMFUL AIR
LEAKAGE AFFECTING THEIR CARBURETION.
IDLE ADJUSTMENT
The operations for adjusting the idle speed must be carried out when the engine is warm, as follows:
1. Acting on the throttle valve travel end adjustment screw (2) until approaching the corresponding limit
at spontaneous stop of the engine;
In these conditions, act on the mixture flow adjustment screw (1) to reach a higher rpm number.
If with this adjustment the RPM number reached is excessive, reduce it, using the screw (2) lowering
further throttle valve, reaching a minimum regular regime (1250 - 1450 rpm).
KEY:
1. Idle adjustment screw
2. Throttle valve travel end adjustment screw
3. Transmission and throttle control
4. RPM limiter device
APE TM Benzina Maintenance
MA - 35
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