I rejetted for my new Yoshi and it runs great. My problem now is that when its not running the right side carb leaks fuel from the overflow on the bowl if I don't shut it off. I'm thinking that maybe I accidently knocked the float setting off when I removed the carbs. Would this cause it to leak? I also lost one of the little springs that goes on top of the needle but I fabbed a replacement and I don't think this could cause my problem. Any help is appreciated.

 

I actually had the same problem last weekend...I was out riding and shut it off and fuel started pouring out the overflow on the right side. Took it apart and the floats were good, but the needle valve was a little sticky and it was enought that the float could not shut the valve off when the fuel level was up far enough. All I did was clean the needle valve assembly and sprayed a tiny bit of lube on the valve and reassembled it. It works fine now.

 

I didn't do anything to it but yesterday I warmed it up then shut it off. I left the fuel valve open and now it isn't leaking. Now I don't know what to think.

 

It could have been a small piece of debris in there holding the float valve open, it only takes one small piece to jack up your day.

 

I hope your right. I love problems that go away when I ignore them.

 

Lest you get confused by one of the posts referring to the "needle valve", I think he was referring to the float needle valve, which can sometimes fail to operate correctly. When the float tang attempts to close the valve, the spring loaded valve fails to close, allowing fuel to continue flow into the bowl and out the overflow tube. I doubt that the needle jet would be the problem, but since you must remove the carb to do any maintenance, you may as well check the float level as well as the float valve for proper operation. Try spraying carb cleaner liberally in & around the valve, making sure the float tang fully depresses the valve. If you need the specs on float levels I can look it up.

 

Yes, I would appreciatte the float specs. I haven't got a manual yet. Thanks.

 

Raptor carburetor float height:

With the carb held upside down, the distance from the mating surface of the bowl(with the gasket removed) to the top of the float is 13mm (0.51&quot.
The float tang should be resting on the valve, but not compressing it.

 

Thanks Hot Shoe. I'll ride it one more time to see if the problem returns. If it does then its off with the carbs again.

 

I just did. That is a good tip.