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CARBURETOR and FUEL PUMP
The carburetor BING 54/36, if used properly, provides good performances requiring
few tuning intervention. However, changes in weather conditions, altitude and a
possible change of the propeller (both in size and pitch) can affect its functioning.
The carburetor is adjusted during the testing phase with a standard setting. To
adjust the carburetor on the basis of these different situations, smaller or larger jets
are available.
The MINI 3 is equipped with a depression pump that draws fuel directly from the
tank. The draft tube has to no longer than 80 cm.
CARBURATION
Warning: in this paragraph the words "MIXTURE" indicates the union of the two elements (AIR) + (OIL /GASOLINE)
which takes place inside the carburetor
Weather conditions or altitude changes have influence to the operation of the
engine as it varies the air density and, consequently, changes the mix ratio between
the element AIR and the element OIL /GASOLINE.
In general, we can say that at high altitude, high humidity or high temperatures, less
air enters and therefore the mixture is richer in oil/gasoline: you will have to re-
establish the proper relationship by replacing the main jet with a lower measure.
In contrast, with low temperatures and low humidity, the air will become denser
than the lean-burn oil / gasoline, and consequently you will have to install a bigger
main jet.
WARNING: A mixture that is too low in oil/gasoline causes considerable damage to
the engine, which can cause it to break down and/or stop suddenly. It is
recommended to carry out the carburetion operations with the ENGINE SWITCHED
OFF!
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