Search results

  1. S

    Yamaha 15A performance problem

    Hello,<br />y '78 Yamaha 15A somtimes won't rev up in gear. Starts and idles well and always revs up in neutral.<br />Problem is intermittent and sometimes when running at more than half throttle performance suddenly drops. <br />Have checked tank ventilation/fuel filter/fuel pump and cleaned...
  2. S

    Yamaha 15A performance problem

    My '78 Yamaha 15A doesn't rev up to more than 1/3 of maximum under load and makes a 'burbling' noise with throttle fully opened. Starts and idles perfectly and revs up with no problems in neutral. Initially, the problem was intermittent with longer periods of normal operation and the engine then...
  3. S

    Yamaha 15 hp performance problem

    My '78 Yamaha 15A doesn't rev up to more than 1/3 of maximum under load and makes a 'burbling' noise with throttle fully opened. Starts and idles perfectly and revs up with no problems in neutral. Initially, the problem was intermittent with longer periods of normal operation and the engine then...
Top