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Discussion Starter · #1 ·
Ok, i have a 2006 YFZ450. Mods are as follows.

HMF Bill Balance Full System

Stage 3 Hot Cam

Dyna Tech FS Rev Box

13:1 Piston.

Pro Design Intake

K&N Filter/Open Box

Ok, i have a problem, my bike's engine was built in New Mexico, i currently own it in Louisiana. This is a significant elevation difference. I knew that the bike had to be re jetted, but the richness never bothered me much. So i decided to mess with the carb, which turned out to be a big mistake. I tightened the fuel mixture screw all the way, then turned it out 2 turns. Now my bike throttle response is beyond weird. It over revs, bogs, the throttle snaps back on me, and if i let off the gas and pull the clutch in, it dies completely, is this problem related to me messing with this fuel screw?????
 

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im assuming that the fuel screw was the only adjustment made?

remove the screw and make sure the needle on the end didnt possibly become damaged. when taking it out, there will be a spring, washer, and o-ring. take note on the order they came out. if it all looks good, re install the screw, but at one turn out this time.

it would have been bennificial to have recorded the original screw position.
 
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