Pontoon Boat & Deck Boat Forum

I have a 90hp Yamaha and when I start it the water doesn't flow out. It's been sitting for a year and has 36hrs on the motor. Do you think the rubber water impeller has broken apart ? The impeller is in the lower shaft, I think ??

First try cleaning the proof tubing path, starting at the outlet end.

Mine sat for 3-1/2 years and the impeller was a little stiff but still fully functional. I highly doubt that the impeller disintegrated so badly that you get zero flow in that time frame. I used a piece of weed eater line and a touch of carb cleaner to ream it out a bit. Once I got a little bit flow, it took off.

Thanks Marc.....I'm going to remove the inlet plates and take a look...

Dirt dobbers love to fill up the pee hole.

If you're the original owner and you haven't run the engine without water, the chances of you needing a new impeller is nil. Yamaha impellers are really tough and long lasting.

Sometimes it takes a 30 seconds or longer for the water to flow out of the hole.

Bamaman wrote: ↑

Thu Aug 27, 2020 11:12 pm

Dirt dobbers love to fill up the pee hole.

If you're the original owner and you haven't run the engine without water, the chances of you needing a new impeller is nil. Yamaha impellers are really tough and long lasting.

Sometimes it takes a 30 seconds or longer for the water to flow out of the hole.

sounds like a long time.

Bamaman wrote: ↑

Thu Aug 27, 2020 11:12 pm

Dirt dobbers love to fill up the pee hole.

If you're the original owner and you haven't run the engine without water, the chances of you needing a new impeller is nil. Yamaha impellers are really tough and long lasting.

Sometimes it takes a 30 seconds or longer for the water to flow out of the hole.

Kinda what I was thinking. He's from GA and I am too....those things don't waste any time. Gotta be careful taking a crap outdoors because those things will plug your b-hole before you can get your pants up.

Mud dobbers! I have this in my tool compartment! Weed eater string long enough to run the whole tube.

On my Honda the hose came off the fitting.