S&S Cycle
S&S, idle mixture screw. Late o-ring style
S&S, idle mixture screw. Late o-ring style
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- With 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 (MCS 940521) o-ring type mixture screw. The late style carburetor body housing can be identified by the text ''Made In USA'' next to the text ''SHORTY''.
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