Question about 2002 Yamaha YZF-R7 OWO2
Hi and welcome to FixYa,
To my understanding, most of these China made scooters uses a vacuum controlled cut-off fuel valve. Vacuum is tapped either from the carb out or intake coupler to activate and allow fuel flow; no vacuum no fuel from tank. Possibilities are:
Incidentally, the 'revs like mad' is a result of slight overflow when fuel first flows to a starved/empty carb bowl.
Good luck and thank you for using FixYa.
Posted on Apr 20, 2009
Retro scooter packed up one night on the way home.disconnected side stand switch runs better now than when I got it. and its a 2012
Posted on Mar 04, 2013
Adjust your valves.
as jinlun motors wear the valve clearance closes.
thus when it warms up there will be no compression.
and act's like its out of gas..
Posted on Mar 13, 2010
4strk50cc new cdi coil and carb still wont run for long whats next
Posted on May 20, 2009
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