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'01 800 XC Running lean

1K views 8 replies 7 participants last post by  Sno-X-treme 
snow-x is exactly right the further in u turn the screw the leaner the mixture. yamaha has for years called this a fuel enrichment screw. the only air ajustment you can do is change the air jet on the intake side of the carb.

Vmaxyam
 
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