Before Engine Start; Pre-Flight Check; Oil Level - Rotax 912 Series Operator's Manual

3.2) Before engine start

3.3) Pre-flight checks
Safety
Operating media

Oil level

Effectivity: 912 Serie
Edition 4 / Rev. 0
Carry out pre-flight checks.
Risk of burnings and scalds! Hot engine parts!
Conduct checks on the cold engine only!
Step Procedure
1 Check for any oil-, coolant- and fuel leaks. If leaks are
evident, rectify and repair them before next flight.
Operating media are to be observed!
The oil specifications of the
Step Procedure
1
NOTE
Propeller shouldn't be turned excessively reverse
the normal direction of engine rotation.
Remove bayonet cap, turn the propeller slowly by hand
in direction of engine rotation several times to pump oil
from the engine into the oil tank.
2 It is essential to build up compression in the combustion
chamber. Maintain the pressure for a few seconds to let
the gas flow via the piston rings into the crankcase. The
speed of rotation is not important but the pressure and
the amount of gas which is transferred into the
crankcase.
3 This process is finished when air is returning back to the
oil tank and can be noticed by a gurgle from the open oil
tank.
4 Check oil level and add oil if necessary.
5 Install bayonet cap.
BRP-Rotax
m WARNING
ATTENTION
Chapter 2.5.
November 01/2016
Page 3-5