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I am new to Rotax engines and have my 915iS installation complete and nearly ready for first engine start.  I am some time away yet from getting my airplane into the air, but have begun studying the operation of the engine in more detail.

The Operators manual is fairly clear on the starting procedure and pre takeoff checks, but it is a little tedious to read through and some areas aren’t 100% clear.  For example, the lane checks appear to be performed at 2500 RPM.  The wastegate and PCV check specifies full throttle, but there is a note saying this check can be combined with the lane checks.  Then there is the fuel pump checks at 2000 RPM.  And I forgot the full throttle performance check before the lane checks. Not sure how you combine the lane and PCV checks given that they occur at vastly different RPMS.

I was hoping to find a video here going through the full ground test, but have yet to find one.  It appears to me that the sequence is basically this:

1. Warm up the engine.

2. Do a short WOT test to ensure the engine will rev to max static RPM.

3. Throttle to 2500 RPM for the lane checks.

4. Throttle to wide open for the wastegate and PCV check.

5. Throttle back to 2000 for fuel pump checks.

6. Then back to idle until takeoff.

Does this sound about right?

If anyone is aware of a good video that covers this in real-time, please pass it along.

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