In a single word? YES! Also, when you do this run the machine until it dies. That will remove most of the fuel left in the bowl. I don't know who the Harley mechanic was but he's f.o.s.!!!! The idea of leaving it open takes longer for the gas to go bad is totally wrong unless you go out and shake the thing every day or so. Have any of you ever seen a fire with an open petcock??? Kiss everything within a few feet good-bye! Not so with it off. It's a saftey thing here guys!!!
'96 Xplorer 300 Aftermarket CDI box, K&N filter, jet kit, reworked expansion chamber from dirt bike, 1" taller + 1" wider rear tires, dual wenches, Rack on rear/w cargo pac, polaris box on front, Mossy Oak cover on seat, back-up lights on rear, aux. power source for GPS,"Theft deturent's", hand protectors, new clutch springs coming! Would love to find GURU style bumpers! By the way, I'm also a graduate of AMI with over 20 years of motorcycle mechanical experiance. New to quads, but the same basic engines. 2 stroke or 4 stroke!