Yamaha YFZ50 2019 Owner's Manual page 38

OFF
1
4
1. Arrow mark positioned over "OFF"
With the fuel cock lever in this position, fuel will not
flow. Always turn the fuel cock lever to this posi-
tion when the engine is not running.
ON
1
1. Arrow mark positioned over "ON"
With the fuel cock lever in this position, fuel flows
to the carburetor. Turn the fuel cock lever to this
position when starting the engine and riding.
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