When [ not if ] your fuel petcock starts leaking. Fuels dry out and crack the rubber internal disc and they also wear out from the pressure from the valve face depressing the disc. You will find that the internal petcock parts are not listed for the valve. Repair requires that the entire new petcock valve is replaced as a unit. So I have a easy way to fix it for about a quarter of the cost of the OEM full replacement petcock valve. What is leaking is the inner fuel gasket [ round rubber disc with four holes ]. You can buy a Honda OEM part number 16955-HA2-005 gasket. This is actually listed for the Honda CR250 MX bikes. The CR disc is exactly a direct replacement for the CRF disc that is not available. Easy repair, drain the fuel, two cross point screws on the valve face. Plug and play and off you go.

Anyone that needs the spec's on the discs size feel free to PM me. Hope this helps a few riders.
