Mercury - Mechanical SmartTow Helm Kit Speed & Tow Control Interface 8M0101650. Overview. SmartTow brings a level of consistency and control that tow-sport boaters have wanted on mechanical MerCruiser engines for years. The Mercury 8M0101650 Mechanical SmartTow Helm Kit finally makes that possible. It delivers the same smooth pull-ups, steady speed control, and repeatable rider profiles once limited to Digital Throttle and Shift applications. With this helm kit installed, mechanical-control gas