O.S. Engine OS23781400 Ball Link No.3 20K - Carburettor Linkage Joint  [OS23781400]

Fitment and compatibility notes for carburettor linkages

This O.S. Engine ball link is an RC carburettor linkage component intended for use on glow engine throttle and mixture linkages where a compact ball joint is needed. The part OS23781400 corresponds to Ball Link No.3 20K and is supplied as a single ball link to connect a control rod with a carburettor lever.

Typical installation requires fixing the ball link to the rod and seating the ball into the carburettor lever or mating fitting. Ensure fasteners are clean and that linkage travel remains free of binding; correct clearance and alignment prevent unwanted play during operation.

For correct fitment, confirm rod and clevis dimensions, then adjust link length or ball position to change leverage and response. The ball link provides controlled, repeatable motion between the throttle servo or arm and the carburettor while minimizing friction.