what is the most you can turn out the air screw to lean out the idle circuit. It's on a yz250 1998. It cold fouls plugs like crazy I went to 2 1/2 turns out and it helped alot.
Thanks in advance
JoKeR
Agreed, I went one step leaner in the pilot and it solved my rich off the bottom problem and gave me back a useful range of adjustment on the airscrew. If you go farther than 2 turns out a leaner pilot is probably in order.
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