71-00-00
page 18
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02621
BRP-Rotax
Maintenance Manual
5.2) Preservation of an engine which has been in operation
Due to the special coating of the cylinder wall, the ROTAX aircraft engine
normally needs no extra protection against corrosion.
â– â–
â– â–
â– CAUTION: Maximum storage period 12 months if the listed precautions are
taken!
– Oil change see latest issue Maintenance Manual (Line Maintenance) for the
respective engine type, 912 Series or 914 Series.
– On the ROTAX 912 Series: Run the engine to allow it to warm up, leave it
running at increased idle speed, remove the air filters and inject approx. 30
cm
3
of preservation oil into the carburetors, shut down the engine.
– On the ROTAX 914 Series: Remove the top spark plugs from all four
cylinders and spray preservation oil into the cylinders through the spark plug
bores.
Turn the crankshaft several times.
Fit spark plugs and spark plug connectors.
– Drain carburetor float chambers.
– Apply engine oil to all linkages on carburetors.
– Close all openings on the cold engine, such as the exhaust pipe, venting tube
and air filter intake against entry of dirt and humidity.
– Spray all external engine steel parts with preservation oil.
5.3) Returning the engine to service
– Remove all plugs and fasteners.
– Clean spark plugs with solvent and a plastic brush.
– If preservation including oil change took place not longer than a year ago,
oil replacement will not be necessary. In the event of longer out of service
periods repeat the whole preservation procedure annually.
â–² WARNING: Work on the engine may only be carried out and approved by
authorized persons. See the latest issue Maintenance Manual
(Line Maintenance) for the respective engine type, 912 Series
or 914 Series.
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