This is a Yamaha 9.9 hp outboard boat motor that runs excellent.. This engine is a 2-stroke and only weighs 75lbs. We have fully serviced this motor with the following: Water Pump, Thermostat, Gear Lube, Carburetor Cleaning and Kit, and Spark Plugs. This engine is the most desirable 2-stroke 9.9 hp outboard ever made. The power-to-weight ratio makes this an ideal engine for any boat that can accomodate a 9.9 hp. This engine has a manual start, short shaft (15"), Tiller Handle, and Thru-Hub exhaust. This would be the ideal outboard motor for a Gheenoe, Boston Whaler, Jon Boat, Inflatable, Hunting Boat, Carolina Skiff, or any vessel that can handle a 2-stroke 9.9 hp outboard.