Yamaha F20SMHB 20 HP Four-Stroke Tiller Outboard, 15" Shaft, Manual Start
The Yamaha F20SMHB is a 20 HP, two-cylinder four-stroke portable outboard with EFI, a 15-inch shaft, tiller steering and manual starting. Its 432 cc SOHC in-line engine weighs 126 lbs.
The 432 cc engine uses an in-line SOHC layout with a streamlined intake manifold, and Yamaha lists a full-throttle range of 5,000 to 6,000 RPM. It is sized for light craft such as aluminum fishing boats, tenders and inflatables. Standard equipment includes an aluminum propeller, a fuel line, a safety lanyard and the owner's manual.
Highlights
20 HP, 2-cylinder SOHC four-stroke with EFI
15-inch shaft, tiller steering
Manual start
126 lbs, 432 cc
Aluminum prop, fuel line and safety lanyard included
Specifications
Brand | Yamaha |
Model | F20SMHB |
Horsepower | 20 HP |
Cylinders | 2 |
Displacement | 432 cc |
Shaft Length | 15 in |
Steering | Tiller |
Starting | Manual |
Weight | 126 lbs |
Fuel Induction | EFI |
Full Throttle Range | 5,000–6,000 RPM |
Good to know
Confirm shaft length, controls and propeller rotation against your boat before ordering, and stay within the maximum horsepower on the boat's capacity plate.
Installation, rigging and commissioning by a qualified marine technician are recommended; follow the manufacturer's pre-delivery and break-in procedures.

