Rotax 912 i series Service Manual

BRP-Rotax
MAINTENANCE MANUAL LINE
Oil specification not respected
Step
Procedure
9 Drain oil from oil tank.
10 Refill oil tank with oil as specified, refer to Operators Manual.
11
Purge air from oil system.
See Chapter 12-20-00 section Purging the oil system.
12 Run engine for approx. 1 hour and replace oil and oil filter once more, as
stated above.
SPARK PLUG NOT IN ACCORDANCE WITH SPECIFICATION
General note If by error any of the spark plugs were installed which are not according to specification of
the engine manufacturer and/or not genuine ROTAX® parts, the following verification will
be necessary.
Spark plug not in accordance with specification
Step
Procedure
1
Mark position of the spark plugs (e.g. cylinder 1 top) and remove all spark
plugs.
2 Inspect the spark plugs for damage (formation of melt beads, burn off). At
heavy melt beads or bad burn off, inspect the piston dome and cylinder wall
by borescope. If parts are damaged, the engine must be inspected, re-
paired or overhauled in accordance with the BRP-Rotax instructions for
continued airworthiness.
3
Inspect all systems for correct function.
4
Detailed inspection of affected engine components.
5
Inspect spark plug thread for damage (especially at bad burn off).
6 Differential compression check.
See Chapter 12-20-00 section Checking the compression.
7
Change oil and oil filter.
NON COMPLIANCE OF FUEL QUALITY
General note With the use of unsuitable fuel quality (e.g. low octane fuel), depending on the operating
condition the knock control would activate itself. This control should prevent damage by
knocking combustion.
The use of unsuitable fuel quality has to be entered in the engine log book.
Effectivity: 912 i Series
Edition 2/Rev. 0
05–50–00
Page 29
September 01/2018

Rotax 912 i series Specifications

General

Brand	Rotax
Model	912 i series
Category	Engine
Language	English