How Does a Motorcycle Work?
Fuel Petcock Valve
- Most bikes have a Fuel Petcock Valve on the engine to shutoff the supply of gasoline. It has at least three positions: ON, OFF, and RESERVE.
- The rider turns the petcock to RESERVE when the reserve area of the gas tank is reached.
- Some motorcycles don't have petcocks and instead have gas gauges indicating remaining fuel. Many of these bikes have low-fuel indicator lights as well.
- Here's a good reference on Gas Tanks that also discusses all the types of Petcocks. It discusses ON-OFF-RES, ON-RES-PRI, and ON-OFF systems: Gas Tanks
- Once the Fuel Petcock Valve is turned on, the ignition switch turned on, the transmission placed in neutral, the choke pulled out, and the KILL switch turned to the run position, the motorcycle can be started.
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Alphabetical List of ALL Motorcycle Parts
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