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  1. Nam11b

    FR691v loss of power/backfire

    Replaced this weekend and runs like a champ. I didn’t see any obvious damage or leakage to the gasket, but it definitely fixed the issue. Thanks for the help!
  2. Nam11b

    FR691v loss of power/backfire

    You nailed it Bert. Bought a tester and finally got around to testing the motor. Compression was good, but I was blowing air out of the dipstick during the leak down test. Thanks for the assist
  3. Nam11b

    FR691v loss of power/backfire

    Thanks Bert. That was my fear. Per the service manual, 64psi is the minimum. What is the allowable or expected bleed down?
  4. Nam11b

    FR691v loss of power/backfire

    I have a toro ss5000 with a Kawasaki FR691v that started popping and surging under load last season. Seems to idle fine and will drive okay, but with the blades engaged or on a slope it will start popping (I assume backfiring) and the power will noticeably drop. Power will come back for a few...
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