Our 2010 Yamaha which has a carburetor, sits May to October. The octane of untreated gas degrades over time. Our routine is:
a few days before leaving fill it with premium gas and add marine grade stabilizer
shut off the valve at the tank
put cart in neutral, start it and run until it stops to remove the gas from the carburetor
Never had a problem except it does take some cranking to start on our return
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