Mercury - Gen I Throttle and Shift 13 Ft Mechanical Control Cable 8M0085952. The Mercury Gen I throttle and shift cable is designed for Mercury mechanical control systems that require slightly more routing length between the helm and the engine. It is commonly used on mid-size consoles where shorter cables feel stretched and tight bends can negatively affect control feel. The 13-foot length allows the cable to route cleanly and remain relaxed throughout the rigging path, supporting smooth, predi