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Used to ream main drive gear bushings to factory specifications
cast in our own foundry and completely machined in house
Three styles available
Too many styles to list
S&S, idle mixture screw. Late o-ring style - 510915 Used to ream main driveWith o ring (late style E G) Fits late style Super E, G carbs only. Note: Never overtighten idle mixture screws in E and G carburetors. It is very easy to damage the angled idle mixture screw seat in soft aluminum carburetor housing. This is very hard or impossible to repair. It can result in irregular idling. Note: The early style (approx. pre 2013) mixture screw (MCS 977815) is not interchangeable with the late style (approx. 2013 up) mixture screw
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