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[?]Does any know the air screw setting for a Mikuni Carb VM38-311? Or where one could access this information. Have tried Mikuni American Corp. site but seems mostly dealing with motorcycles.
 

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It depends what sled its on. My 97 XLT SP has the Mikuni VM38 and they're speced to 1 turn out from lightly seated.
 

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I found the VM tuning manual for you at the Mikuni site, it is for a bike, but VM is VM.
Just tune and jet for colder temps.

http://www.mikuni.com/pdf/vmmanual.pdf
 

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I have mine set at 1.5 turn out from light seat. No problems in 5 years
 
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