Mercury - Remote Control Attaching Kit Mechanical Control Hardware 826557A1. The Mercury Remote Control Attaching Kit is designed for updating or servicing mechanical control linkages on select two-stroke Mercury outboards. This kit restores proper alignment at key attachment points, helping throttle and shift movement remain steady, predictable, and factory-correct. It's a practical solution when worn or mismatched hardware begins to affect control feel or linkage accuracy.. Mechanical control