Rotax 912 i Series Service Instructions Manual page 11

SI-912 i-001R4
SI-912-016R9 / SI-914-019R9
6) General engine operation requirements and operating tips
1. Keep the motor oil temperature below 120 °C (250 °F) over most of the operating period.
2. Always insure that the oil type used is adequate for climatic conditions and peak engine operat-
ing temperatures. If operational oil temperatures exceed 120 °C (250 °F), use of a mineral or
petroleum based oil is not recommended.
3. For turbocharged engines ensure an adequate running cool-down period to prevent deposits
by coking of oil.
4. When operating with unleaded fuels or MOGAS and when engine oil temperatures often
exceed 120 °C (250 °F) use of a high quality full synthetic oil is recommended.
5. To avoid formation of condensation water in the motor oil, the oil temperature must rise at least
once every operational day to at least 100 °C (212 °F).
6. Avoid extended use of carburetor air pre-heating when safe and reasonable.
7. Depending on the type of fuel used, operating conditions, and the demands of the engine mis-
sion profile it may be necessary to increase the frequency of oil changes to avoid the excessive
build up of lead and other residues in the engine oil. Always adjust the engine oil change inter-
vals to avoid excessive build up of sludge in the engine oil.
m
Excessive engine vibration, particularly at low idle speeds, can impair the carburetor fuel metering
system leading to a too rich mixture condition. This rich mixture condition can further lead to rough
engine operation and excessive carbon and lead deposits.
7.1) Summary
These instructions (section 3) have to be carried out in accordance with the deadlines specified in
section 1.5.
Translation to other languages might be performed in course of localization. In any case the origi-
nal text in English language and the metric units are authoritative.
7.2) Inquiries
Inquiries regarding this Service Instruction should be sent to the ROTAX
your area.
A list of all distributors is provided on www.FLYROTAX.com.
27 March 2017
Copyright - BRP-Rotax GmbH & CO KG. All rights reserved.
Do not use oil additives and observe the operating limits as per the rele-
NOTICE
WARNUNG
vant Operators Manual.
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graphic.
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