Question about 1979 Yamaha TX 750

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79 yamaha XS 750 crank no start

So the bike was running fine all week then I go to leave work and I crank the bike it sputters and dies. so I think ok kick start it time, I do that until my leg is sore and then try and crank it again with the battery charger hooked up... no go. so the next day i take the carbs off (not apart) and spray a can of carb cleaner in the fuel in lines and then hook them back up after a good flush and still no start. then I took out one of my spark plugs and sprayed some carb cleaner in there it almost started so Im thinking that I really need to do a carb rebuild but I dont know enough about these carbs to do it and be sure that Im not going to ruin them.

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Well here goes your problem probably in the float bowl area water sediment blocked low speed jets if you do not want to do a complete tearmore down just clean the jets and float bowl.
Use a carb cleaner soak the jets make sure you can see through them the small low speed jets specially.
if you have access to air blow the jets clean.
spray any passage ways with carb cleaner reassemble good luck.

Posted on May 07, 2010


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