👨‍🔧 Tips Adjusting Air Pilot Mixture Screw Mikuni Keihin Carburetor 2 Stroke Dirtbike MX YZ250 KX250
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 Published On Oct 9, 2020

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These are just general guideline / tips. You should check this adjustment for every ride (even during the day of riding.) If your bike has severe running issues - this will likely NOT resolve that problem. Before you go diving into your carb and turning your air fuel mixture screw - make sure ALL services and maintenance are up to date - and that there are no OBVIOUS issues that need addressing. This video demonstrates what you should listen for when adjusting your air pilot screw. And the difference in sounding Lean and sounding Rich at idle. Make sure your carb / carburetor is clean and rebuilt with no obvious problems. Make sure your crank seals are good. Make sure your exhaust silencer is clean and repacked. Make sure your intake reeds are in good condition. Make sure there are no intake leaks, exhaust leaks, or other obvious crankcase leaks, etc. Make sure your topend is recent. If you have other questions, please comment below.
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