Question about Yamaha XS 500 Motorcycles

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My 1983 yamaha virago 500 is having trouble around 3 to 4 thousand rpm and now is having trouble starting and staying started

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Sounds like your carb is dirty in all areas. Remove the carb and completely disassemble it. Blow carb cleaner and compressed air through every opening and make sure each opening comes out somewhere when you spray through. Clean the float needle seat with a q-tip and carb cleaner. Spray through each of the jets and be sure they are absolutley clear. Make sure you get the emulsion tube out and clean. it is what the main jet screws into and will have holes down the sides.Screw the mixture screw in and count the turns. remove it and any spring or o-ring and spray through it also and make sure the spray goes all the way through. Replace the mixture screw and set it in the same adjustment as you started. Reassemble and install the carb. If the carb was adjusted properly in the beginning, you should put it back on and your bike run much better.


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Posted on Jun 12, 2010

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