Mercury 2.5 HP 2.5MH delivers affordable, portable power. The 2.5 HP is perfect for small inflatable boats, canoes and other small boats. The Mercury outboard motors are known for their large displacement powerhead which gives this outboard substantially more power than other similar class rated engines. Standard features in Model # Mercury 2.5MH is a 15 inch short shaft, twist grip throttle, forward-neutral gear shift and a built in 1 liter fuel tank with tiller steering.