Yamaha 50HP 2 Stroke Long Shaft 50HMHOS

Pulled from a used 2011 Yamaha 50HMHOS, this long-shaft unit is a 50 hp two-stroke outboard. Oil injection meters two-stroke lubricant automatically, so this 50HMHOS does not need pre-mixed fuel, and starting and trim are both handled by hand rather than by motor or key.

What to check before buying

Yamaha built the 50HMHOS platform in more than one length, so confirm long-shaft is correct for your transom before buying this particular unit, since swapping a shaft after the sale is not practical. Three carburetors feed the two-stroke engine, and full throttle is rated from 4500 to 5500 rpm with a 1.85 gear ratio driving the lower unit. A 12-volt, 6-amp alternator covers basic electronics on this motor.

Condition

This long-shaft 50HMHOS is sold used, in its current running condition rather than rebuilt or refurbished. Dry weight on the spec sheet is listed at 75.0 kg, with a shipping weight of 158 lbs for the crated unit. As with any used two-stroke this age, have a mechanic check compression and the water pump impeller before the first trip out, and plan to carry a spare shear pin and prop nut.

Common questions

Does it need pre-mixed fuel? No, oil injection handles two-stroke lubrication on this unit automatically.

Is the trim powered or manual? Manual on this long-shaft 50HMHOS, along with manual starting.