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02 July 2021
79-00-00
Revision
Page 6 of 15
Copyright - BRP-Rotax GmbH & Co KG. All rights reserved.
SI-916 i-003R1 / SI-915 i-003R2
SI-912 i-004R3 / SI-912-018R4 /
SI-914-020R4
SERVICE INSTRUCTION
NOTE:
It is recommended that the lower spark plugs be removed to help prevent foreign ma-
terial in the combustion chamber.
NOTE:
The oil tank bayonet cap is not pressure-tight, some air can escape.
The pressure in the oil tank has to be maintained during the following steps
NOTE:
Do not use the starter for this purpose. Fit propeller and use it to turn the engine.
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WARNUNG
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WARNING
Non-compliance can result in serious injuries or death!
Be sure that ignition is switched off prior to any engine rotation of the pro-
peller.
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WARNUNG
NOTICE
Prevent entering of foreign substance through spark plug hole.
Step
Procedure
6 Optional: This step assists in the purging procedure but may be skipped if compressed air is
not available. The procedure may take longer without air pressure.
Using a compressed air line, pressurize the oil tank through its vent nipple (pos. 6 on
Fig. 1) (on the neck of the tank). Adjust the compressor outlet regulator so that the air
line pressure is between 0.4 (5.8 psi) and 1 bar (15 psi). Do not exceed 1 bar (15 psi).
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WARNUNG
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WARNING
Non-compliance can result in serious injuries or death!
Do not remove oil tank or cover before ensuring that air pressure has been
completely released from the tank.
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WARNUNG
NOTICE
The oil tank may become empty and as result introduce air into the oil sys-
tem. Pay attention to the oil level and fill tank as required.
Step
Procedure
7
Turn the engine by hand in direction of normal rotation until the first pressure indica-
tion on the oil pressure gauge of engine instrumentation in the cockpit. Normally this
will take approx. 20 turns. Depending on installation it may take up to 60 turns.
8
Stop the pressurization. Allow air pressure to bleed off.
9
Remove the cap(s) (pos. 7 on Fig. 1) from the oil tank and reconnect the engine oil
return line(s) (pos. 5 on Fig. 1) to the tank.
Ensure that the suction oil line (pos. 1 on Fig. 1) and oil return
line(s) (pos. 2 on Fig. 1) are connected to the proper fittings on the
oil tank. If the oil lines from the engine to the oil tank are incorrectly
connected, severe engine damage may result.
Step
Procedure
10
Re-fit the spark plugs. Restore aircraft to original operating condition.
NOTE:
See relevant MML on spark plug fitting and correct torque. If need-
ed re-apply heat compound to threads.
NOTICE
