[jhthompson]

My 1993 Yamaha 15 HP 2 stroke engine does not pass water through the "pisser" with muffs on and engine running. I found that the woodruff key was completely gone from the system when I removed the lower drive assy. The impeller looked fine although the fins were a litle curved, although it seemed to fit tightly in the pump cylinder. While loose I found the system was not clogged through the "pisser". When I put it back together, no output from the water pump. I tried both with muffs on and in a bucket. Any suggestions? TIA.

[Grant S]

On my 8hp yammie I had a similar problem, even though the impeller looked ok. I replaced it. Make sure that the water level in the bucket is higher than where the water pump is in the leg.

[31900]

The hose from the motor to the telltale outlet can become blocked.Check it out by removing it and blowing through it or clearing it with a piece of thin wire. Some insects love to block it with mud after laying eggs in there.

[jhthompson]

Thanks Grant S: I recently ordered a manual for the engine so I can purchase the impeller next. Does your yammy shoot out water from the pisser as soon as you start up,when the motor is cold?

[jhthompson]

Thanks Adam1: I believe hat I did do that by running water up through the tube when the lower end was off.