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Bill, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 255
Experience:  Over 35 years working for large Harley Davidson ,Honda ,KTM, Multi line Dealer
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Submitted: 9 years ago.
Category: Motorcycle
Expert:  .... replied 9 years ago.
Hi Repoman,

Mixture screws are on the bottom of the carb bodies and are usually covered by an aluminum plug, well they always are from the factory(plugged), as adjusting them actually violates emissions laws. But it's also important to have the bike run right.

In order to get to it you will need to remove that plug, if it is on the airbox side of the carb it is an air mix screw if it's on the engine side of the carb it is a fuel mix screw. More often than not if you are feeling the need to adjust this setting it is due to improper jetting and most often a dirty carb. If you have installed fresh spark bolts and gotten a good high speed plug reading to determined improper jetting you are best suited to change your pilot jet, move the needle or both.
Expert:  Bill replied 9 years ago.

I am uploading these pics at brians request.