I have noticed that when I am sitting still (idling), I can smell fuel. I checked the overflow tube coming from the carb bowl and there is a wetspot about 3/4"-1" from the end. You can see the gas evaporating from the end of the tube. I checked the float level, but the 400's float is plastic and non-adjustable. I also checked the fuel inlet valve and seat for dirt, but there was none. I run a fuel filter to avoid this problem, but still I am having problems with fuel coming out of the overflow. I have checked a total of five 400's and they all had this problem while running. I talked to a dealer and they were not aware of any problems to date. Has anyone on this forum experienced this problem and how did you fix it (if you did)?

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a Fast Boy from Illinois -(FBI)- Riding a 2000 Honda 400EX

 

Mine only does it on hills and wheelies.
I hope sooner or later, somebody comes out with an aftermarket float kit for that thing. I don't know why Honda has the fuel level set so high. I think it is stupid that it is not adjustable.
It is probably not adustable because of EPA regs or something stupid. Although I think raw gas spilling out is more of a pollutant than the user trying to make thier own adjustments to it.

phil