Lightweight, portable power: Weighing in as light as 60 pounds, these 139cc OHV single-cylinder four-stroke powerhouses offer a CDI ignition system, optimally balanced crankshaft, long-span mounting system, labyrinth exhaust and a host of other features for smooth, quiet power. They even have built-in carrying handles for true portability and convenience.
Maximum efficiency: The carburetor and its setting is factory-selected for maximum fuel efficiency, helping these outboards achieve a 3-star C.A.R.B. emissions rating. Additionally, automatic decompression, built-in auxiliary priming, and start-in-gear prevention help make for easy, safer starts.
Convenient control: Control is key with a dynamically balanced and dampened large twist-grip throttle, 180-degree steering, and large F-N-R shift handle.

Engine Type	Four-stroke 1-cylinder
Displacement	139cc (8.5 ci)
Bore & Stroke	62 x 46mm (2.44 x 1.81 in)
RPM Range	4,000-5,000
Compression Ratio	8.9:1
Induction System	OHV (overhead valve)
Alternator Output	6 Amp (optional: requires charging kit)
Fuel Delivery	Carburetor
Starting	Manual
Ignition	CDI
Lubrication	Wet sump
Degree of Trim/Tilt	5 positions / 69°
Exhaust	Above propeller
Cooling	Raw water, Thermostatic Control
Gear Shift	F/N/R
Gear Ratio	13/27 (2.08:1)

Lightweight, portable power: Weighing in as light as 60 pounds, these 139cc OHV single-cylinder four-stroke powerhouses offer a CDI ignition system, optimally balanced crankshaft, long-span mounting system, labyrinth exhaust and a host of other features for smooth, quiet power. They even have built-in carrying handles for true portability and convenience.
Maximum efficiency: The carburetor and its setting is factory-selected for maximum fuel efficiency, helping these outboards achieve a 3-star C.A.R.B. emissions rating. Additionally, automatic decompression, built-in auxiliary priming, and start-in-gear prevention help make for easy, safer starts.
Convenient control: Control is key with a dynamically balanced and dampened large twist-grip throttle, 180-degree steering, and large F-N-R shift handle.

Engine Type	Four-stroke 1-cylinder
Displacement	139cc (8.5 ci)
Bore & Stroke	62 x 46mm (2.44 x 1.81 in)
RPM Range	4,000-5,000
Compression Ratio	8.9:1
Induction System	OHV (overhead valve)
Alternator Output	6 Amp (optional: requires charging kit)
Fuel Delivery	Carburetor
Starting	Manual
Ignition	CDI
Lubrication	Wet sump
Degree of Trim/Tilt	5 positions / 69°
Exhaust	Above propeller
Cooling	Raw water, Thermostatic Control
Gear Shift	F/N/R
Gear Ratio	13/27 (2.08:1)

NEW 2026 Yamaha F4SMHA