2007 Suzuki Vinson 500

[Jc4360]

I just bought this quad having an issue with the valve for the fuel. When I got the quad I could not turn the valve at all. I take it apart when it's turned to the on position or reserve I get no fuel The only way I can get you a lot of it is the vacuum or remove the spring on the diaphragm. If I remove the spring fuel flows freely matter what the setting is. Can this be rebuilt or is put together wrong

[Tim-ANC]

You have a vacuum operated fuel valve. The diaphragm opens up the fuel valve when it gets suck from the carb. No suck: it stops fuel delivery. Its meant to be automatic shutoff when the machine is not running. The spring operates a poppet shutoff valve. Removing the spring doesnt close the poppet allowing fuel to flow. The PRI position actually bypasses all this and feeds fuel directly.

Your problem might be not getting suck from the carb or the poppet is stuck closed.

I dont like these because the diaphragm can leak and you end up sucking fuel into the carb causing an overly rich condition. Ive replaced those on my machines with a standard ON OFF RES valves.

Ive never seen a rebuild kit for them. You can look around. Otherwise get the standard valve, or put it together again and make sure the poppet works right. Also you can just run it in PRI, always on position.

[Tim-ANC]

Here`s a pic of the fuel selector routing channels.

[Jc4360]

Thanks for your help I'll look at it again. I probably will end up going just for the normal shut off valve on it