4
MINI CLASS
TILLOTSON HW-34B CARBURETTOR SETTING
The recommended base setup of the carburetor screws, after running-in, is as
follows:
▪ L (from totally closed position, open): 1 turn+30’ – 1turn+40’
▪ H (from totally closed position, open): 40’– 50’
According to different conditions, such as altitude and ambient temperature, it may
be necessary to adjust the carburetor in order to optimize the engine performance.
- Never lean excessively the mixture: risk of overheating and seizing.
- Never tighten the screws H and L forcefully, the screws seats may result damaged
and the carburetor unrepairable.
- Carburetor adjustment must be performed with warmed up engine.
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