This petcock valve is commonly found on scooter, ATV, motorcycle, and dirt bike carburetors. Many older motorcycles and scooters used a small auxiliary reserve tank instead of a gauge. This petcock is based on a common Yamaha design and it is a very useful scooter, ATV, & dirt bike part that can be used on go-karts, dune buggies, and a wide range of gas-burning machines.
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