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rpm loss

  1. Engine hesitation

    Diesel
    Our Universal 35B, running at approximately 2400 rpm, started to sputter (hesitate, lose power, rpm drop) yesterday. It sounded as though the engine was about to die, but it revived when the throttle was feathered and ran flawlessly for the next 3 hours. The engine has been rock solid for the...
  2. Yanmar loses RPM in gear

    Diesel
    I have about 500 hours on my 3GY20 Yanmar. I've had no problem with it. I've always been able to run it up to 3400 - 3600 RPM. I prefer to run it about 2700 RPM for comfort and vibration, and that seems to optimize speed/efficiency. I try to run it at 3000 periodically to clean the...
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