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3.4 Fuel system
This engine model uses a diaphragm carburettor. The position of the tank and the
configuration of the fuel line affect the operation of the carburettor and the engine. Vittorazi
has performed many validation tests to identify the right configuration and its limits.
The fuel tank must be positioned properly. The level of the tank bottom must remain at a
maximum distance of 100 cms from the carburettor. Larger distance can compromise the
carburettor pumping, up to reduce the fuel flow rate, thus leaning the carburation and
potentially overheating the engine. By placing the tank in the gap between the indicated
maximum distance (100 cms) and zero, it leads to negligible changes in flow rate. In the
event that this value is not respected for special aircraft geometries, contact Vittorazi
directly.
Cosmos 300 - Installation manual - V3
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