Yamaha F20LMHB Outboard Motor. 20-Inch Shaft Tiller Handle Manual Start Manual Tilt Gray. The Yamaha F20LMHB Outboard Motor is a long-shaft, portable 20-horsepower workhorse designed for boaters who value reliability and simplicity. With a 20-inch shaft, manual start, and manual tilt, this model is perfect for sailboats, deeper-transom skiffs, and small utility boats that require dependable power without unnecessary complexity.. Its twin-cylinder 4-stroke engine delivers smooth, quiet operation