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

Fine adjustment for throttle and mixture linkages

This O.S. Engine ball link is intended as a compact linkage joint for RC carburettors, used where precise control of throttle and mixture is required. The unit is identified by part number OS23781400 and supplied as Ball Link No.3 20K for connection between a control rod and a carburettor lever.

To install, secure the ball link to the linkage rod and engage the ball end with the carburettor lever or mating linkage. Verify that fasteners are free of debris and that the linkage operates without binding; careful setup improves response and repeatability.

When tuning for improved engine response, small changes to control rod length and ball link placement will modify leverage and sensitivity. Use the ball link to achieve precise, smooth motion between the servo or throttle arm and the carburettor without adding friction.