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page 11 - 1
Jan. 01/2007
Effectivity: 912 Serie
OM Edition 1 / Rev. 0
BRP-Rotax
11) Checks
All checks to be carried out as specified in the current Maintenance Manual (last
revision).
▲ WARNING: Only qualified staff (authorized by the Aviation Authorities)
trained on this particular engine, is allowed to carry out
maintenance and repair work.
■ CAUTION: Carry out all directives of Service Bulletins (SB), according to their
priority.
11.1) Engine preservation
Due to the special material of the cylinder wall, there is no need for extra
protection against corrosion. At extreme climatic conditions and for long out
of service periods we recommend the following to protect the valve guides
against corrosion:
– Let engine run until warm, then change oil.
– Remove the air intake filters and insert approx. 30 cm³ (1 fl oz) of corrosion
inhibiting oil into the carburetor throat with the engine running at increased
idle speed. Shut off engine.
– Drain carburetor float chamber.
– Apply oil to all joints on carburetors.
– Close all openings on the cold engine, such as exhaust end pipe, venting
tube, air filter etc. against entry of dirt and humidity.
– Spray all steel external engine parts with corrosion inhibiting oil.
Engine back to operation
– Remove all plugs and fasteners.
– Clean spark plugs with plastic brush and solvent.
– If preservation including oil change took place within a year of storage, oil
renewal will not be necessary. For longer storage periods repeat preser-
vation annually.
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