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View Full Version : 300ex E-series jetting



sprtrx300ex
07-02-2003, 02:48 PM
Soon I will be getting the e-series complete system. I will be running a UNI filter with the lid ON. Im not sure about my elevation. I live in Virginia.
What changes need to be done with the pilot?
What changes need to be done with the main jet?
What changes need to be done with the mixture screw?
What changes need to be done with the needle?

Also, I read somewhere that the reason 300ex's pop is because of the breather tube coming out of the top of the engine? Is this true? I know that leaness/octane also affect popping, but i havent ever gotten my 300 to "not pop" on decell.

Thanks for any info.

sprtrx300ex
07-03-2003, 05:05 AM
bump

sprtrx300ex
07-05-2003, 05:29 AM
bump

sprtrx300ex
07-07-2003, 06:58 AM
Come on guys! Help me out!

thumper250x
07-09-2003, 02:26 PM
try a 125 first, then if that dont work try a 130