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    my john dere 115 19hp lawn tractor back fires when you turn it off what is wrong with it

    Why does it back fire

    +1  Views: 602 Answers: 2 Posted: 10 years ago

    2 Answers

    It’s either the timing chain or bad valve. It’s misfiring……...

    terryfossil 1

    Maybe JH maybe...........................

    Gidday Carmon,my ride on used to do the same thing,although it was not a John Deere,,it has something to do with running at high revs, and the tempture of the fuel in the carby,although it is not a real carby as in a car.anyway i fixed my problem,by letting the motor idle down for 2 or 3 minutes, that helps use up any excess fuel in the carby,,I reckon it is a lot like a pre ignition problem..anyway give it a try and let me know how it goes................Always nice talking mate



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