Rotax 912 iS Sport Operator's Manual page 80

8.1) Engine preservation and storage
Page 8-2
January 01 2019
Risk of burnings and scalds! Hot engine parts!
Conduct checks on the cold engine only!
Due to the special material of the cylinder wall, there is no need
for extra protection against corrosion for the ROTAX® aircraft
engines. At extreme climatic conditions and for long out of serv-
ice periods we recommend the following to protect the valve
guides against corrosion:
Step Procedure
1 Operate the engine until the temperatures have stabilized
for a period of 5 min (engine oil temperature between 50 to
70 °C (122 to 160 °F).
2 Shut-off engine.
3 Allow the engine to cool down.
4 Change oil.
5 Remove the top spark plugs and spray into openings with
corrosion inhibiting oil.
6 Turn the propeller several times by hand in direction of the
engine rotation, so that the corrosion inhibiting oil reaches
all necessary points.
7 Install the spark plug in accordance to the Maintenance
Manual.
8 Close all openings on the cold engine, such as exhaust
end pipe, venting tube, air filter etc. against entry of dirt
and humidity.
9 Spray all steel external engine parts with corrosion inhibit-
ing oil.
BRP-Rotax
m WARNING
Effectivity: 912 i Series
Edition 2 / Rev. 0