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brandonxwestbrook

99 yz400f issues

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My buddy's got a '99 yz400f that wont stop dripping gas. the float bowl was stuck and we took the bottom of the bowl off and unstuck it, re-assembled and now it just pours out of the overflow. any ideas of whats wrong?

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My buddy's got a '99 yz400f that wont stop dripping gas. the float bowl was stuck and we took the bottom of the bowl off and unstuck it, re-assembled and now it just pours out of the overflow. any ideas of whats wrong?
I assume you mean the float was stuck. Either way, you still have a problem with the float and needle assembly.

For service manuals, I prefer the European link over the Australian one, because the manuals you can download there are printable for the most part, whereas the others aren't.

http://www.yamaha-motor-europe.com/community/service/manuals.jsp

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Sounds like you need to replace the float needle. It has a rubber tip on it, sometimes that will deteriorate over time, depending on what type of gas you use. I used to race a lot in Mexico, there gas ruins that little rubber tip.

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Sounds like you need to replace the float needle. It has a rubber tip on it, sometimes that will deteriorate over time, depending on what type of gas you use. I used to race a lot in Mexico, there gas ruins that little rubber tip.

I love and I mean LOVE your avatar!

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