Question about Yamaha XS1 Motorcycles
First check your oil level. If it is too high , your engine is full of gasoline. You will need to change your oil, check that the air filter is not saturated with oil (if so replace it). You may have a bad vacuum diaphragm on your petcock that is leaking gas into the motor. You can rebuild the the petcock with a K&L rebuild kit or replace it with a new one. You may have a sunk float or a worn or stuck float needle. Take the carburetors apart clean and inspect the components and replace as needed. Unfortunately, even a perfect motorcycle can have a float needle stick and fill the engine with gas forcing you to change your diluted oil. the only answer for this is to always turn off your fuel petcock when not riding. Since your problem does not necessarily sound like a bad diaphragm but more like a sticking float needle you could try running some Chevron Techron through the fuel system just in case the carburetors are just a little gummy/sticky and that is the cause of the problem.
Posted on May 19, 2011
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Posted on Jan 02, 2017
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