Where is the Petcock on a motorcycle?

What is a petcock on a motorcycle?

Aftermarket Motorcycle Petcock & Fuel Valves for Sale

A motorcycle petcock is simply the fuel valve that allows you to turn on or shut off the flow of gasoline from your gas tank to your carburetor. The funny name comes from the two words. “Pet” refers to “small” as in French “petit”.

What happens if you leave the fuel on on a motorcycle?

The primary reason for shutting off the fuel is safety. On a motorcycle the fuel tank is directly above the engine. If fuel were to leak it would drip directly on the hot engine. This along with the fact that most motorcycles use a rubber supply hose that is exposed to the engine heat and the resulting decomposition.

Why do they call it a petcock?


From pet1 or perhaps French pet, from péter to break wind + cock1.

What does Prime mean on a motorcycle?

The “Prime” setting lets you flow fuel directly to the float chambers filling them without having to turn the bike over. On vacuum controlled petcocks the intake’s vacuum opens a diaphram and lets the fuel flow past the petcock, so you need to turn the engine over to create that vacuum.

IT IS IMPORTANT:  Do you need to register a moped in Massachusetts?

How does vacuum petcock work?

The way a vacuum petcock works is the vacuum pulls the diaphragm back, compressing a spring and releasing pressure on a ball or some other sort of valve, this allows fuel to flow around the ball and to the carb.

What is a petcock urinal?

Urinal Cistern Flush Control.

A petcock is simply a plastic bung placed within the inlet pipe, usually with a screw to adjust the inner aperture of the petcock to adjust the flow of water through it.

How does reserve work on motorcycle?

In motorcycles and cars, the fuel reserve setting indicates that the level of fuel in the tank is low. … When the main fuel is exhausted, the motor will start sputtering, prompting the rider to change the position knob to continue riding with a known smaller quantity of fuel.

How do you clean a clogged Petcock?

Using something pointy, gentle pry the four holed rubber grommet out of the petcock. Wash the petcock out with clean gasoline. Flush the gas tank out with clean gasoline. If it’s all rusty inside, acid etch it and seal it with Kreem or POR-15.