Mercury 9.9HP 9.9MH Outboard

The Mercury 9.9HP 9.9MH Outboard is a compact, manual-start portable built for small aluminum, inflatable, jon, utility, and sail boats that do not need remote controls. It is a two-cylinder four-stroke rated at 9.9 hp.

What it is for

This is the base tiller model: a 15 inch short shaft, tiller handle throttle, and a pull-start manual ignition rather than an electric key. At 84 lbs, two people can usually lift it onto a transom without a hoist.

What to check before buying

A 15 inch shaft suits a boat with a low transom; measure yours before ordering, since a short shaft mounted too high will cavitate instead of pushing water cleanly. Manual pull starting also means there is no battery or wiring to plan for, which keeps a small-boat install simple.

What comes with it

Included items are an 8.5 inch, 8.0 pitch three-blade aluminum propeller, a lanyard-style stop switch, tool kit, and owner's manual, finished in Phantom Black with Mercury Marine's 3-year warranty behind it.

Does it need a battery? No, starting is manual pull-start, so no battery or electric-start wiring is required.

What size boats is it meant for? Mercury markets this displacement, shaft, and weight combination for aluminum tiller, inflatable, jon, utility, and sail boats rather than larger console boats.

What rpm range does it run at full throttle? 5000 to 6000 rpm, typical for this class of small four-stroke.