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Does anybody know what size jet comes on a 1999 Honda fourtrax carburetor? I’m about to get a bigger one just wondering what size I should get.
 

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The jet sizes are listed in the service manual—my links below—i would double check the carb model number and then read the stamping on the jet to see what size you have.
Not sure why you’re wanting a larger jet size but yes they are available. Your local bike shop probably has a little box they keep on the shelf for all those jets they’ve ordered over the years. That’s how i got mine
 

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It all depends if you think your jetting your carb correctly.
Your probably going to change the main jet first which is completely the wrong way..!!
Search this forum, get a better understanding of carb tuning and then ask again. NEVER start at the main ;-)
 
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