Re: 15hp exhaust & water leak…why?

[johnyrude200]

All good points. And I agree, these 74-76 models are haunting me right now (I should be THROUGH with them for the near future by the end of this week though…thank god…worked on about 7 of these 9/9/15’s the last 3 weeks and am ready for a simple 6, 9.5, or the good ‘ol 18-20-25’s).

I actually just had a motor with the exact impeller housing/SST cup issue you said. Salt had built up so much between the housing and the cup that the SST cup was bent inward. I just swapped out the entire housing with another gearcase I had lying around.

I’ll double check that high speed orifice for the motor the customer returned today. That’s just the brass vertical piece in the center of the carb on these models, isn’t it? I’ll figure it out one way or another…it’s usually something simple.

The only oddball thing I can think of beyond what we’ve discussed is that this motor was a 15hp motor that was downgraded to a 9.9 carb. Not sure if this would cause this loss of power at mid and high range (and I’m not talking about just less power, I mean it’s not hitting the RPM’s it should even for a 9.9 configuration).