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Sir, My Rotax engine 914 F2 installed in Stemme S6 Aircraft did not start in 4 attempts. I have few questions please.
1. Is there any limit to starting attempts, mean if engine did not start in 1st attempt before starting any inspection of starting system how many time try to start engine.
2. There is no pause mention in maintenance manual before the next start. please advise the time to be observe between two starting attempts.
3. shortly describe the possible cause and remedy for fail start.
4. At which RPM starter disengage the crank shaft.
  • Re: FAIL START

    by » 5 years ago


    1- No limit to the number of start attempts.
    2- the Operators manual says you are to let the starter cool for 2 mins after a 10 sec start (this is very, very conservative)
    3- The Stemme has a delay module, make sure that is working. the Stemme forum (SOG) is a very good place to ask for help, it is private so you need to apply to be added to the list.
    5- When the crank is going faster than the starter the sprag disingages (the starter does not have a bendix so it is always connected to the crank through the idle gear and sprag)

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