Question about 2007 Yamaha XT 125 X
Okay....I think your bike may have a vacuum operated fuel petcock.....which is the fuel valve on the bottom of the tank. It shuts the fuel off automatically when the engine stops and the hose from the intake to the side of the petcock loses vacuum.
So when you restart the bike the petcock is closed till the engine starts...which is okay because there is a small amount of fuel in the carb.........until you run out of gas....then the engine quits and the carb is empty.
To handle this situation, typically there is a prime position on the petcock that allows flow without vacuum to "prime" the empty carb......usually marked as PRI on the petcock,
So rotate the lever on the petcocck to prime....wait a couple minutes....get the bike started and set the petcock back to the normal setting....don't leave it on PRIME as fuel may flow overflowing the carb.
Posted on Apr 04, 2011
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Posted on Jan 02, 2017
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