Mercury - Gen I Throttle and Shift Cable 10 Foot Mechanical Engine Control 8M0082483. The Mercury Gen I Throttle and Shift Cable is a mechanical control cable designed to connect the control box to the engine for direct throttle and shift input. Built for legacy Mercury Gen I mechanical control systems, it delivers a straightforward, hands-on control feel preferred on boats that rely on proven mechanical operation. The 10-foot length supports cleaner routing on wider hulls and center console lay