State of the art design of the 15 HP Mercury EFI outboard motor power head 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: 15MLH is a 107-lb. 15 HP outboard motor, manual start with a 20 inch long shaft. Mercury outboard engines surpass industry standards and deliver power and fuel economy.