Rotax 914 F Maintenance Manual page 35

Rising airbox pressure will press diaphragm upwards thus decreasing fuel
flow back to tank
Modification no.
- 0 -
e.g. fuel pressure rises until equilibrium is reached.
ATTENTION:Correct excess fuel pressure is essential for proper function
of carburetor.
too low fuel pressure (wrong calibration, malfunction of regulator,...) leads
to a leaner mixture and can result in engine troubles or engine failure as
not enough fuel or no fuel at all reaches the float chamber.
too high fuel pressure (wrong calibration, malfunction of regulator, in-
creased flow resistance, blockage of retour line,...) leads to a richer
mixture till flooding of carburetors causing engine troubles or engine stop.
Reference Main Date
1997 02 01
914 F
Page
35