Harley Davidson Motorcycle Fuel Petcocks

Your Harley Davidson uses the petcock as a valve that regulates the flow of fuel from the gas tank to the carburetor. The valve is needed to prevent flooding the rest of the system with excess fuel when the bike is parked. A conventional mechanical petcock or a fuel tap features a simple ball valve architecture and can be switched on or off manually. Its automatic version comes with a vacuum-controlled valve that opens only when the engine is running. Since it is always closed when the motor is off, instead of “off” position, the “prime” option is included for bleeding the system during the maintenance procedures.

The users of older models not featuring a fuel level gauge can benefit a lot from the petcocks with a “reverse” position. In an “on” mode, such a device receives fuel through a tube protected by a mesh screen and positioned a little higher from the bottom of the tank. When the rider feels that the engine is choking, he or she could switch to “reserve”, the gasoline is supplied through the shorter tube positioned closer to the bottom. This allows riders to avoid ending up with an empty tank. Browse our online catalog of premium-quality Harley Davidson fuel petcocks and choose the one that suits your needs best.