Search results

  1. DangarStu

    Vacuum hose on airbox of F50

    Hi there I have a 1996 Yamaha 50HP four stroke and there is a vacuum hose that attaches to the bottom of the airbox, but I'm not sure what it is for. I can't see it in the service manual and I can see any place where the other end should attach. Can anyone shed any light on where this should...
  2. DangarStu

    Hole in water jacket just under flywheel

    I have been helping a friend with their Mercury 90 HP four stroke 2008 recently and when we looked at the old thermostat is had almost completely corroded away (just the top flange remained). I cleaned all the corrosion out and put a new Mercury original in along with a new gasket. Now it has...
  3. DangarStu

    Pressure testing two stroke crank case

    Hi there. I have a Yamaha 15HP two-stroke circa 2000 that isn't running to well (idles fine but will never achieve full power, long story), and another Mercury 90HP two-stroke that is hard to start. One thing I've heard with two strokes is that bad reed valves or main bearing oil seals can...
Top