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Cuts out and backfires

Troybuilt lawn tractor, 2 years old, courage 19 motor:
Motor cuts out and backfires when warm. Happens when cutting on slope travelling sideways on slope or when going up the slope. Happens with or without load.
After getting back on level with throttle reduced it corrects but will do it again when put against a slope. just started 4 mowings ago.
Plug is dry, black on the sides, and slightly light gray in the middle of the finger.
Carb seems to have fuel flow.
Moving throttle to choke during malfunction only killed the motor.

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  • Randy McComas
    Randy McComas May 11, 2010

    Do you have an inline fuel filter?

  • josh1111 May 11, 2010

    could be valves in the engine

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  • 10 Answers

Adjust the valves, this should solve the problem,

Posted on Jun 01, 2009

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