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pilot/air/idle mixture screw

22954 Views 25 Replies 8 Participants Last post by  frog13
I want to try to clarify this. When adjusting the pilot screw, turning it clockwise will lean out the mixture. So turning it counter-clockwise will richen the mixture allowing more fuel to enter the cylinder. So if there is a surge at low speed when opening the throttle quickly it needs to be leaner. Correct?

And is there a sweet spot where it will be easy to start and not surge or is it a trade off?
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Clean the carb.

Mine was doing the same thing. Pulled the carb and found black sediment all over the place! Source (I think) was the foam air-filter. It had degraded and bits were coming off.
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