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Rotax B8ES Spark Plugs

Discussion in 'Engines and Propellers' started by Darren Masters, Sep 17, 2011.

  1. Darren Masters Moderator

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    How often are you all replacing these? I have a Rotax 447 and I am replacing the plugs after what I assume was 30 or so hrs. Probably don't need to as the plugs look ok but I don't know when the owner before did them.

    Michael Coates, you may know mate, what is the recommended replacement by Rotax?
    Darren Masters, Sep 17, 2011
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  2. robinsm New Member

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    every 25 hrs as per book
    robinsm, Oct 25, 2011
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  3. Michael Coates BIG Member

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    Agreed... 25 hours sounds good, especially if the engine is inverted.
    Michael Coates, Oct 25, 2011
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  4. Darren Masters Moderator

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    Not inverted but I have been advised 25hrs so that is what I shall do :)
    Darren Masters, Oct 25, 2011
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  5. David Isaac AKA David Isaac

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    Well that depends, we don't know how you fly way down there in kiwi land do we ... LOL
    David Isaac, Oct 25, 2011
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