Yamaha 50HP 2 Stroke Short Shaft 50HMHOS

This used 2011 Yamaha 50HMHOS is a short-shaft, 50 hp two-stroke outboard pulled from fresh water with no corrosion on the housing. Compression tested at 120 psi across all three cylinders on this unit, the exterior shows no scratches, and the seller describes it as original and unmodified.

What to check before buying

Yamaha offers the 50HMHOS in more than one shaft length, so confirm short-shaft fits your transom before you buy this exact unit, since a shaft swap afterward is not practical. Lubrication is by oil injection rather than pre-mixed fuel, three carburetors feed the engine, and full throttle runs from 4500 to 5500 rpm. A 6-amp alternator at 12 volts handles basic electrical loads on this motor.

Condition

Low hours paired with a fresh-water history are the standout points on this short-shaft 50HMHOS next to a typical used two-stroke of this age. The gear ratio is 1.85, trim and starting are both manual, and the crated shipping weight comes to 158 lbs against a dry weight of 75.0 kg. Ask about recent fuel-system service on any two-stroke this age before running it hard, and plan to top off the oil-injection reservoir before the first outing.

Common questions

Has this engine been altered from stock? No, the seller describes this 50HMHOS as all original.

Does the compression test look healthy? Yes, all three cylinders tested at 120 psi.