My fuel petcock was leaking and a new one is about $24 and is not repairable
I happen to have a spare fuel tank for a 86 Yamaha Badger 80 and it just so happens they use a better quality fuel valve that is a direct fit to the polaris.
and costs $11.21 and is rebuildable with a new o ring. Yamaha part is 55X-24500-02-00
The only hitch is a the nipple points forward instead of back and will require a slightly longer fuel line. Even the extended shaft to control the valve on the Sportsman worked perfectly.
The Polaris part is 7051006
Thought it was a good find and a definite upgrade.
Ken

 

It's probaly time to replace the rubber hose anyways. With all the crap in todays gas, the rubbers breakdown. Wouldn't hurt to add an inline fuel filter too.
Good luck