State of the art design of the 2019 15 HP Mercury EFI outboard motor powerhead creates the low-end torque needed for power and fast planing making it an excellent source of power for medium to larger sized jon boats, skiffs, and inflatable boats. This ultra-lightweight?motor is the first ever portable outboard with an ambidextrous tiller. Mercury Outboard Model: 15MH is a 103-lb.15 HP outboard motor, manual start with a 15 inch?short shaft. Mercury outboard engines surpass industry standards and deliver power and fuel economy.