[wptabs] [wptabtitle]Overview[/wptabtitle] [wptabcontent]

Here’s why so many boaters carry Yamaha reliability with them, wherever they go:

Incredibly Light
Yamaha Portables are incredibly light, weighing as little as 37 pounds. Talk about punch you can pack.

Easy to Carry
Select models feature built-in front and rear carry handles for maximum portability. Plus, recent re-designs have made several of our portables, well, even more portable. The F9.9 is 12% lighter than previous designs, and we’ve trimmed 23 pounds from our F6.

Max Maneuverability
Our 5-Step Trim Adjustment and 3-Step Shallow Water Drive System (on select models) protects your propeller in skinny water, making these pintsized powerhouses extremely maneuverable and getting you where you need to go.

Fuel Efficiency
The smaller the motor, the less fuel it consumes, true. However, one of Yamaha’s portables actually made it into the Guinness Book of World Records for the most miles traveled on one gallon of gas, going 67.27 continuous statute miles.

Smart Innovation
Our Easy Oil Retention System allows the F6 and F4 to be stored on their sides or front grip without oil leakage. Our F15 and F20 designs feature a water-cooled fuel pump, boosting power and preventing warm weather starting issues like vapor lock.

Yamaha Portables just seem to get lighter, stronger and smarter, year after year. Let’s take a look at their ever-advancing engineering.

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[/wptabcontent] [wptabtitle]Standard Features[/wptabtitle] [wptabcontent]

Portable Features

S = Standard Features   ○ = Optional Equipment   ● = Available with or without   R = Required   C = Compatible

Power/Performance F20 F15 F9.9 F8 F6 F4 F2.5
SOHC S S S S
Large Displacement Engine S S
Streamlined Intake Manifold S S S S S
Large Volume Air Silencer S S
Labyrinth Exhaust S S S S S S
Water-Cooled Fuel Pump S S
Acceleration Pump  S S S
Long Span Mounting System  S S S  S S S
Four Stroke Engine Design  S S S S  S S S
Tuned Intake Manifold S
Oil Separator S  S S
Streamlined Gearcase S  S S
Dynamic Balancer S
California C.A.R.B. Ultra Low Emissions 3 Star Rating S
Meets all current Federal EPA Emission Standards S
Overhead Valve (OHV) Design S S S
2-Valves Per Cylinder S S
Precise Carburetor Setting S S
Built-in Auxiliary Priming Pump S S
Dynamically Balanced Crankshaft S S
Short Stroke Engine Design S
Rubber Dampened Tiller Handle S
Compact Offset Crankshaft S
Reliability/Durability
Engine Warning System Function S S S S
Built-in Start-in-Gear and Shift-in-Gear Prevention S S
Thermostatic Controlled  Engine Temperature S S S S
Wet Sump Lubrication S S S S
Waist Driveshaft S S S
High Output Alternator S S S
ACP-221 Paint Process S S S S S S
Self-Draining, One-Piece Top Cowling S S
Stainless Steel Driveshaft, Prop Shaft, Shift Shaft and Steering Tube S S S S S S S
Power Tilt (“P" Models) S
Shallow Water Drive (“M" and “E" Models) S
CDI Microcomputer* S S S S S S
Fishing Line Protector S S
YDC-30 Aluminum Alloy S S S
Sacrificial Anodes S S S S S S S
Fresh Water Flush S
Large Capacity Water Pump S
Highly Rigid Gears S
Pressurized Lubrication S S
Built-in Fuel Filter S S
Splined Prop Shaft S S S
TCI Ignition S
Splash Lubrication S
YDC Aluminum Alloy S
Cast Iron Camshaft S
Water Resistant Fuel Tank Cap S
Thermostatic Temperature Control S S

Convenience/Control
Electric Start (“E" and “P" Models) S S
Light Load Manual Starter (“M" Models) S S
Auto Decompression Device (“M" Models) S S
Remote Control (Remote Models) S
Reinforced Tiller Handle with Stop Switch (“H" Models) S
Front-Mounted Shift Lever (“H" Models) S
One-Hand Steering & Throttle Friction Adjustments (“H" Models) S
PrimeStart Auto-Enrichment System S  S
External Freshwater Flushing Attachment S  S
Low-Profile, Compact Shape S  S
Built-In Carrying Handle S  S S
Built-In Resting Pads S  S
Wide Steering Angle S  S
Dual Transom Clamps S  S  S S  S S S
Water-Sealed Exhaust S  S
Shallow Water Drive  S  S S S S
Reinforced Tiller Handle with Stop Switch  S
Front-Mounted Shift Lever  S
One-Hand Steering & Throttle Friction Adjustments  S
Compact  S
Lightweight  S
Pilot Water Hole  S
Electric Start (“E" Model)  S
Steering Friction Lever (Tiller Models)  S
Long Span Mounting System  S
Long Multifunctional Tiller Handle  S
Oil Strainer  S  S
Multi-Function Tiller Handle  S
Increased Radius Starter  S
Side Mounted Oil Drain  S
100° Range Throttle  S
Multiple Gripping Points  S  S S S
180-Degree Steering w/F-N-R Shifting  S  S
Easy Storage Oil Retention System  S  S
Standard Tiller Handle  S  S
Easy Start Decompression Device  S  S
Lubrication Check Window  S  S
Dynamically Balanced Tiller Handle  S  S
Lower Cowling Damper  S  S
Built-In See-Through Fuel Tank  S  S
Tilted Fuel Filler Opening  S  S
Selectable External Fuel Tank (Optional)  ○  ○
Forward/Neutral/Reverse Shifting  S S
Decompression Device  S
Built-In Fuel Tank  S  S  S
360° Swivel Steering  S
F/N Shift  S
Tilt Up Engine Stopping Device  S
Pilot Water Blocking Device  S
Split Bottom Cowling  S
[/wptabcontent] [wptabtitle]Power and Performance[/wptabtitle] [wptabcontent]

Maximum Overall Performance

Microcomputer Ignition adjusts timing to maintain optimum engine performance, economy and power under all conditions. (F8 and up)

Ultra-Low Emissions

Yamaha portables from F4 through F20 are California Air Resources Board (C.A.R.B.) Three-Star Rated for Ultra-Low Emissions. Our F2.5 is C.A.R.B. Two-Star Rated for Very-Low Emissions. All Yamaha portable outboards meet federal EPA requirements.

Fuel Efficiency

Of course, small motors use less fuel, but the Yamaha F4 actually set a world record for fuel efficiency. According to the Guinness Book of World Records, an F4 traveled 67.27 continuous statute miles on one gallon of gas.

[/wptabcontent] [wptabtitle]Reliability and Durability[/wptabtitle] [wptabcontent]

Propeller Protection

Yamaha’s Shallow Water Drive (standard on all tiller handle models except the F2.5) helps keep the propeller and lower unit out of harm’s way in shallow water.

Extended Engine Life

A Freshwater Flush Device allows you to flush the engine without starting it, for maximum convenience, durability and engine life. (Available on F15 and F20.)

Corrosion Protection

Yamaha’s exclusive YDC-30 Alloy is one of the most corrosion-resistant base material in the industry. Used with Yamaha’s proprietary ACP-221 Paint Process, it provides an extra-tough barrier against corrosion. They’re both key components of our renowned Ultimate Corrosion Protection System (UCP-II™), which is standard on all Yamaha Portable four stroke outboards.

Warranty Protection

All Yamaha four strokes are protected by our Three-Year Limited Warranty for pleasure use. Beyond that, Yamaha Extended Service (Y.E.S.) plans are available, for continued coverage after your three-year factory warranty expires.

[/wptabcontent] [wptabtitle]Convenience and Control[/wptabtitle] [wptabcontent]

Max Maneuverability

5-Step Trim Adjustment and 3-Step Shallow Water Drive System (on select models) protects your propeller in skinny water, makes these pintsized powerhouses extremely maneuverable and gets you where you need to go.

Efficient Operation

Microcomputer Ignition automatically adjusts timing to maintain optimum engine performance, economy and power under all conditions. (F8 and up)

Easy Engine Flushing

A Freshwater Flush Device allows you to flush the engine without starting it, for maximum convenience. (Available on F15 and F20.)

Easy Storage

Yamaha’s F4 and F6 both feature a pressurized oiling system, our Easy Storage Oil Retention System. This means they can be stored on either side or on the front grip without fear of oil leakage. (Available on F6 and F4.)

Comfortable Operation

The Tiller Handle features a dynamically balanced and dampened large twist-grip throttle, 180° steering and large F-N-R shift handle, for maximum comfort, convenience and control. (Available on F6 and F4.)

Lightweight Portability

Yamaha portables feature SOHC (Single Overhead Camshaft) or OHV (Overhead Valve) configurations and weigh as little as 37 pounds (dry weight). Outboard power doesn’t get much more portable than this.

[/wptabcontent] [wptabtitle]F20 Specifications[/wptabtitle] [wptabcontent]

F20 Specifications

Engine Type 2 Cylinder
Displacement 22.1 ci (362 cc)
Bore x Stroke 63 x 58.1mm (2.48 x 2.29 in)
Prop Shaft Horsepower 20hp @ 5500rpm
Compression Ratio 9.3:1
Fuel/Induction System SOHC
Exhaust Through Propeller
Intake Carburetor
Ignition System CDI Micro Computer
Spark Plug DPR6EB-900-000
Alternator Output 10A **
Starting System Manual or Electric
Lubrication Wet Sump
Engine Oil Capacity 1.8L/1.6L w/without filter
Full Throttle RPM Range 5000-6000
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner’s manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″ L=20″
Degree of Tilt 67°- 71°
Degree of Trim 4 positions
C.A.R.B. Rating 3-Star
Dry Weight F20SMHA = 50kg (111 lbs) F20LMHA = 52kg (115lbs) F20SEHA 53kg (117 lbs) F20LEHA = 55kg (121 lbs) F20LPHA 60kg (132 lbs) F20SEA 51kg (113 lbs) F20LEA 53 kg (117 lbs) F20LPA 59 kg (131 lbs)
Steering Angle (maximum) 45° from center, either direction
Warranty 3 Year Limited Pleasure Boat – 1 Year Limited Commercial
[/wptabcontent] [wptabtitle]F15 Specifications[/wptabtitle] [wptabcontent]

F15 Specifications

Engine Type 2 Cylinder
Displacement 22.1 ci (362 cc)
Bore x Stroke 63 x 58.1mm (2.48 x 2.29 in)
Prop Shaft Horsepower 15hp @ 5500rpm
Compression Ratio 9.3:1
Fuel/Induction System SOHC
Exhaust Through Propeller
Intake Carburetor
Ignition System CDI Micro Computer
Spark Plug DPR6EB-900-000
Alternator Output 10A **
Starting System Manual or Electric
Lubrication Wet Sump
Engine Oil Capacity 1.8L/1.6L w/without filter
Full Throttle RPM Range 5000-6000
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner’s manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″ L=20″
Degree of Tilt 67°- 71°
Degree of Trim 4 positions
C.A.R.B. Rating 3-Star
Dry Weight F15SMHA = 50kg (111 lbs) F15LMHA = 52kg (115 lbs) F15SEHA = 53kg (117lbs) F15LEHA 55kg (122 lbs) F15LPHA = 60kg (132lbs)
Steering Angle (maximum) 45° from center, either direction
Warranty 3 Year Limited Pleasure Boat – 1 Year Limited Commercial
Spec Weight 2
[/wptabcontent] [wptabtitle]F9.9 Specifications[/wptabtitle] [wptabcontent]

F9.9 Specifications

Engine Type 2 Cylinder
Displacement 12.9 ci (212 cc)
Bore x Stroke 56 x 43mm (2.48 x2.29in)
Prop Shaft Horsepower 9.9hp @ 5500rpm
Compression Ratio 9.3:1
Fuel/Induction System SOHC
Exhaust Through Propeller
Intake Carburetor
Ignition System CDI Micro Computer
Spark Plug BR6HS-1000-000
Alternator Output 6A **
Starting System Manual or Electric
Lubrication Wet Sump
Engine Oil Capacity 0.8L (0.85 qt)
Full Throttle RPM Range 5000-6000
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner’s manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″ L=20″
Degree of Tilt 71°
Degree of Trim 4 positions
C.A.R.B. Rating 3-Star
Dry Weight F9.9SMHA = 39kg (87lbs) F9.9LMHA = 40kg (89 lbs) F9.9LEA = 42kg (93lbs)
Steering Angle (maximum) 43° from center, either direction
Warranty 3 Year Limited Pleasure Boat – 1 Year Limited Commercial
Spec Weight 3
[/wptabcontent] [wptabtitle]F8 Specifications[/wptabtitle] [wptabcontent]

F8 Specifications

Engine Type 2 Cylinder
Displacement 12.0 ci (197 cc)
Bore x Stroke 56 x 40mm (2.20 x 1.57in)
Prop Shaft Horsepower 8hp @ 5500rpm
Compression Ratio 8.8:1
Fuel/Induction System SOHC
Exhaust Through Propeller
Intake Carburetor
Ignition System CDI Micro Computer
Spark Plug BR6HS-1000-000
Alternator Output 6A **
Starting System Manual
Lubrication Wet Sump
Engine Oil Capacity 0.8L (0.85 qt)
Full Throttle RPM Range 5000-6000
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner’s manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″ L=20″
Degree of Tilt 78°
Degree of Trim 4 positions
C.A.R.B. Rating 3-Star
Dry Weight F8SMHA = 38kg (83lbs) F8LMHA = 39kg (85lbs)
Steering Angle (maximum) 45° from center, either direction
Warranty 3 Year Limited Pleasure Boat – 1 Year Limited Commercial
Spec Weight 4
[/wptabcontent] [wptabtitle]F6 Specifications[/wptabtitle] [wptabcontent]

F6 Specifications

Engine Type One-Cylinder
Displacement 8.5 ci (139 cc)
Bore x Stroke 62 x 46mm (2.44 x 1.81 in)
Prop Shaft Horsepower 6hp @ 5000rpm
Compression Ratio 8.9:1
Fuel/Induction System OHV
Exhaust Above Propeller
Intake Carburetor
Ignition System CDI
Spark Plug CR6HSB-000-000
Alternator Output 6 Amp (Optional: Requires Charging Kit
Starting System Manual
Lubrication Wet Sump
Engine Oil Capacity .6L (.63 qt)
Full Throttle RPM Range 4500-5500
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner’s manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″ L=20″
Degree of Tilt 69°
Degree of Trim 5 positions
C.A.R.B. Rating 3-Star
Dry Weight F6SMHA = 27kg (60 lbs), F6LMHA = 28kg (62 lbs)
Steering Angle (maximum) 90° from center, either direction
Warranty 3-year Pleasure, 3-year Government, 1-year Commercial
Spec Weight 5
[/wptabcontent] [wptabtitle]F4 Specifications[/wptabtitle] [wptabcontent]

F4 Specifications

Engine Type One-Cylinder
Displacement 8.5 ci (139 cc)
Bore x Stroke 62 x 46mm (2.44 x 1.81 in)
Prop Shaft Horsepower 4hp at 4500 rpm
Compression Ratio 8.9:1
Fuel/Induction System OHV
Exhaust Above Propeller
Intake Carburetor
Ignition System CDI
Spark Plug CR6HSB-000-000
Alternator Output 6 Amp (Optional: Requires Charging Kit
Starting System Manual
Lubrication Wet Sump
Engine Oil Capacity .6L (.63 qt)
Full Throttle RPM Range 4000-5000
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See owner’s manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Ethanol Blend Limit 10% Maximum
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″ L=20″
Degree of Tilt 69°
Degree of Trim 5 positions
C.A.R.B. Rating 3-Star
Dry Weight F4SMHA = 27kg (60 lbs), F4LMHA = 28kg (62 lbs)
Steering Angle (maximum) 90° from center, either direction
Warranty 3-year Pleasure, 3-year Government, 1-year Commercial
Spec Weight 6
[/wptabcontent] [wptabtitle]F2.5 Specifications[/wptabtitle] [wptabcontent]

F2.5 Specifications

Engine Type One Cylinder
Displacement 4.4 ci (72 cc)
Bore x Stroke 54 x 31.5mm (2.13 x 1.24 in)
Prop Shaft Horsepower 2.5 hp @ 5500 rpm
Compression Ratio 9.0:1
Fuel/Induction System Overhead Valve
Exhaust Above Prop
Intake Carburetor
Ignition System TCI
Spark Plug B6HS0-00-00-000
Alternator Output N.A.
Starting System Manual
Lubrication Splash
Engine Oil Capacity 0.4L(0.42qt)
Full Throttle RPM Range 5250-5750
Cooling Water/Thermostatic Control
Recommended Engine Oil Yamalube® 4M (See Owner’s Manual)
Recommended Fuel Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration Yamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Gear Ratio (27:13) 2.08:1
Gear Shift Forward, Neutral, Reverse
Shaft Length S=15″
Degree of Tilt 80°
Degree of Trim 4 positions
C.A.R.B. Rating 2-Star
Dry Weight 17kg (37 lbs)
Steering Angle (maximum) 360° from center, either direction
Warranty 3 Year Limited Pleasure Boat – 1 Year Limited Commercial
Spec Weight 7
[/wptabcontent] [wptabtitle]Photos[/wptabtitle] [wptabcontent] [/wptabcontent] [/wptabs]

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