Mercury - Zero Effort Digital Control (4-Lever, Starboard Mount) Remote Control 8M0085491. OverviewThis Zero Effort control gives you four separate levers-two for shifting and two for throttle-so you can run a performance setup with a really clear, hands-on feel. Each lever moves smoothly, which helps when the boat's running hard or the chop gets messy. The color-coded knobs make it easy to grab the right one without thinking: black for shift, red for throttle. Mounted on the starboard side, it