impressive little performers

Portable four strokes

Tiller: 6 hp, 4 hp, 2.5 hp

Yamaha’s smallest Portables, the F6, F4 and F2.5, weigh in at as little as 37 pounds, with streamlined overhead-valve, one-cylinder designs. Their light weights, combined with built-in carrying handles, resting pads and an oil-leak prevention system for on-side storage capability create true portability. Add to that their efficiency, performance and reliability and these pint-sized powerhouses are perfect for all sorts of light duty, like hopping to the cuddy on a tender. Wherever the day takes you, you can take along a little extra power with an F6, F4 or F2.5 Yamaha Portable.

Owners Manuals

View the 6 hp

View the 4 hp

View the 2.5 hp

PORTABLES PACKED WITH PERFORMANCE

They weigh as little as 37 pounds, but all offer impressive features like electronic ignition, thermostatic cooling and 180-degree steering.

Power & Performance

Lightweight, Portable Power

They may weigh as little as 37 pounds, but these Overhead-Valve portable outboards are packed with features that create smooth, quiet power. This includes a CDI or TCI ignition system, an optimally balanced crankshaft, a long span mounting system and a labyrinth exhaust.

Surprising Performance

The portable F6, F4 and F2.5 all offer impressive features like electronic ignition, thermostatic cooling and 180-degree steering.

Record Setting Fuel Efficiency

Small motors use less fuel, but according to the Guinness Book of World Records, the Yamaha F4 actually set a world record for fuel efficiency, traveling 67.27 continuous statute miles on one gallon of gas.

Reliability & Durability

Wet Sump

A pressurized oil delivery system that incorporates a compact and durable oil pump to keep all of the moving parts of their Overhead Valve systems lubricated and running smoothly for maximum reliability.

Convenience & Control

Easy Storage

Yamaha’s F2.5, F4, and F6 feature our Easy Storage Oil Retention System. This pressurized oiling system prevents leaks, enabling on-side storage.

Comfortable Control

Incredibly nimble, the F6 and F4 feature 180-degree steering and the F2.5 features 360-degree steering with a dynamically balanced and dampened twist-grip throttle for comfort and convenient maneuverabilty.

Portability and Storage

Built-in front and rear handles make these lightweights easy to carry. Resting pads and an easy oil retention system allow for convenient on-side storage without cowling scuffs or oil leakage.

Product Videos:

Yamaha Portable

Portable 6 hp

Our 139-cc 6-hp portable is an impressive little outboard. It boasts surprising features for such a small motor, like labyrinth exhaust and a long span mounting system for smooth, quiet power. It also offers the convenience an external fuel tank (in addition to its built-in tank) for extended range and added convenience.

Tiller-handle control with forward-neutral-reverse shifting and an ergonomic twist-grip throttle
Only 59 pounds (15” shaft model)
Available in 15” and 20” shaft lengths
Solid 6-amp alternator (optional)

Prop Selector

Portable 4 hp

Our 139-cc 4-hp portable outboard mirrors our OHV F6, with a couple less horses. It features the same ergonomic, easy-grip starter handle with a built-in decompression device for effortless starts. The F4 also features a built-in fuel tank with the option of switchable access to an additional external tank for amazing extended range. There’s no stopping this little brute.

Tiller-handle control with forward-neutral-reverse shifting and an ergonomic twist-grip throttle
Only 59 pounds (15” shaft model)
Available in 15” and 20” shaft lengths
Solid 6-amp alternator

Prop Selector

Portable 2.5 hp

Our 72-cc 2.5-hp portable outboard is the smallest motor on our roster, but it still packs a punch. Completely redesigned, it’s even more portable, easier to store and clean burning.

Available for tiller-handle control with forward-neutral shifting, 360-degree steering and an ergonomic twist-grip throttle
Only 37 pounds (15” shaft model)
Available in 15” and 20” shaft lengths

Prop Selector

Specs & Compare

6 hp
4 hp
2.5 hp

Engine Comparison

Engine Type	1 cyl
Displacement	139cc
Bore x Stroke	62 x 46mm (2.44 x 1.81in)
Prop Shaft Horsepower	6hp at 5000 rpm
Full Throttle RPM Range	4500 ~ 5500
Alternator Output at W.O.T.	6 Amp
Compression Ratio	8.9:1
Fuel Induction System	Carb
Weight †	27 kg (59 lbs) - 28 kg (61 lbs)
Recommended Fuel	Octane 87
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	N/A
C.A.R.B. Rating	3-Star
Exhaust	Above Propeller
Intake	2
Ignition	CDI
Spark Plug	CR6HSB
Alternator Output	6 Amp
Starting System	Manual
Lubrication	Wet Sump
Engine Oil Capacity	0.6L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.08:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	15" - 20"
Degree of Tilt	69°
Degree of Trim	-4° through +16°
Dry Weight	15" shaft / 27 kg (59 lbs), 20" shaft / 28 kg (61 lbs)
Mounting Centers	N/A
Steering Angle (maximum)	90° from center, either direction
Warranty	Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial

† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

Engine Comparison

Engine Type	1 cyl
Displacement	139cc
Bore x Stroke	62 x 46mm (2.44 x 1.81in)
Prop Shaft Horsepower	4hp at 4500 rpm
Full Throttle RPM Range	4000 ~ 5000
Alternator Output at W.O.T.	6 Amp
Compression Ratio	8.9:1
Fuel Induction System	Carb
Weight †	27 kg (59 lbs) - 28 kg (61 lbs)
Recommended Fuel	Octane 87
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	N/A
C.A.R.B. Rating	3-Star
Exhaust	Above Propeller
Intake	2
Ignition	CDI
Spark Plug	CR6HSB
Alternator Output	6 Amp
Starting System	Manual
Lubrication	Wet Sump
Engine Oil Capacity	0.6L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.08:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	15" - 20"
Degree of Tilt	69°
Degree of Trim	-4° through +16°
Dry Weight	15" shaft / 27 kg (59 lbs), 20" shaft / 28 kg (61 lbs)
Mounting Centers	N/A
Steering Angle (maximum)	90° from center, either direction
Warranty	Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial

Engine Comparison

Engine Type	1 cyl
Displacement	72cc
Bore x Stroke	54 x 31.5 mm (2.13 x 1.24 in)
Prop Shaft Horsepower	2.5hp at 5500 rpm
Full Throttle RPM Range	5250 ~ 5750
Alternator Output at W.O.T.	N/A
Compression Ratio	8.8:1
Fuel Induction System	Carb
Weight †	17 kg (37 lbs) - 20 kg (40lbs)
Recommended Fuel	Octane 87
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	N/A
C.A.R.B. Rating	2-Star
Exhaust	Above Propeller
Intake	2
Ignition	TCI
Spark Plug	CR6HSB
Alternator Output	N/A
Starting System	Manual
Lubrication	Splash
Engine Oil Capacity	0.35L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.01:1
Gear Shift	Forward, Neutral
Shaft Length	15" - 20"
Degree of Tilt	79°
Degree of Trim	-4° through +16°
Dry Weight	15" shaft / 17 kg (37 lbs), 20" shaft / 20 kg (40 lbs)
Mounting Centers	N/A
Steering Angle (maximum)	360° from center, either direction
Warranty	Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial

View Bulletins for all Models

Perf. Bulletins

6 hp
4 hp
2.5 hp

Manufacturer	PowerMatched	Boat Model	Engine	Configuration	Bulletin