Aeropro CZ - A240 - Pilot Operating Handbook and Flight Training Supplement
September 1, 2014
1-10
Due to the higher lead content in AVGAS, the wear of the valve seats, deposits in the combustion
chamber and lead sediments in the lubrication system will increase. Therefore, use AVGAS only if you
encounter problems with vapor lock or if other fuel types are not available.
For additional information concerning fuel specification consult the
Operator’s Manual for all versions
of Rotax 912
supplied with the engine.
The fuel system consists of two 10.6 U.S. gallons wing tanks, a 1.1 U.S. gallons central header tank
behind the left seat, a fuel drain valve positioned below the header tank, three fuel valves, one fuel filter,
an engine driven fuel pump, a backup electric fuel pump (not shown in the diagram below), and the
connecting fuel lines.
The fuel is gravity-fed from the right-hand and/or left-hand wing tank, through the wing tank fuel values,
into the central header tank. The fuel is then further directed from the central tank through the fuel filter
and the electric fuel boost pump through the main fuel valve and to the mechanical fuel pump on the
engine which then delivers the fuel to the carburetors.
The amount of fuel in each tank is indicated by a visual sight tube which is a part of each tank. Minimum
fuel quantity in the central tank is indicated by a red warning light on the instrument panel. The remaining
fuel (0.9 U.S. gallon), is enough for approximately 10 minutes of flight. The low fuel warning light can be
tested at any time by pushing the control button next to the light on the instrument panel. If the red light
does not light up when the control button is pushed and held, consider the bulb to be blown out and so do
not rely on the minimum fuel quantity warning light: - In this case, make a more conservative estimate for
fuel on board, regularly check the fuel quantity in wing tanks and land as soon as you are not confident of
the fuel quantity in the wing tanks.
Although it is normal to leave both wing tank fuel values open, occasionally, one tank will drain faster than
the other. Should this situation occur, manipulate the fuel tank valves to ensure continuous flow of fuel to
the engine is maintained.
