Effectivity 912 Series
Edition 1 / Rev. 2
page 39
July 01/2008
d04352
73-00-00
BRP-Rotax
Maintenance Manual
3.4.2) Fuel pressure (on 914 Series)
There is no specific connection on the engine for reading the fuel
pressure. However, it makes sense to take fuel pressure readings for
monitoring purposes and for troubleshooting.
See latest installation manual for the respective engine type.
All the necessary items are available as spare parts.
■ CAUTION: The fuel pressure must be approx. 250 hPa above
the constantly varying boost pressure in the “air-
box”. Otherwise the perfect functioning of the
carburetors is not assured. See 73-00-00 sec. 2.
Fit the pressure gauge where it can be easily observed by the operator
of the ground test run.
■ CAUTION: Make sure there is no danger that the pressure gauge
and hoses will get drawn into the propeller airstream. If
necessary, secure with tie wraps.
▲ WARNING: No aircraft take-off before an obvious fault has been
found and eliminated!
If during the test run the nominal fuel pressure values are not met, shut
down engine and start with the trouble shooting procedure.
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