If it runs on reserve maybe you need to rethink using the Yamaha part. Or get used to not having back-up when it sputters to a stop as you run out of gas.

Jack

before it would always start right up when i put it on prime.
this time i had plenty of gas in her but when i tried to restart it just wouldn't catch until i pulled choke out. then it would barely idle but if i added any throttle whatsoever it would stall out.
i checked out there on the highway and with the petcock on "on" or reserve there was still fuel flowing out of the tank. I also checked the carb bowl and it was full as well.

Hmm loose wire ? like the starter area ?
thanks

thats a good point. whats a good way to clean out a tank ?

franch wrote on 09/18/08 at 16:36:24:

Unfortunately, it kinda depends on what you got in there. IE Rust from the tank itself is different than water.

If I were having your troubles. First I would figure out if I was now drawing from the reserve instead of the "run" tube in the tank. Second even if I wasn't, I'd probably drain the tank and take a look at the contents. Once I had a tank of gas drained from a mini-van that looked like it was half full of crude oil and debris. I even know where the tank of gas came from, unfortunately couldn't prove it and the station wouldn't stand up and admit the problem. Needless to say, that was an expensive tank of gas. I wouldn't expect the same appearance from your tank, but anything that doesn't look like gas after things settle out is going to give you problems. If you have access to a scope of some kind, you can even examine the inside of the tank (seams and low spot) for rust.