2023 Yamaha 4HP For Sale – 20″ Shaft

• 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.

• Easy Operation: The F6, F4 and F2.5 feature built-in, see through fuel tanks. The F6 and F4 also feature switchable access to an optional, 3.1-gallon external fuel tank for extended range.
• 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.
• Corrosion Protection: Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha Portable outboards.
• Maximum Efficiency: The F6, F4 and F2.5 have a carburetor with a factory-selected setting for maximum efficiency, which helps them achieve a C.A.R.B. Three-Star Rating for Ultra-Low Emissions. Additionally, automatic decompression, built-in auxiliary priming and start-in-gear prevention help make for easier starts.

• 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.

• 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

• 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 †: 28 kg (61 lbs)
• Recommended Fuel: Octane 87
• Recommended Engine Oil: Yamalube® 4M (See owner’s manual)
• 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: 20″
• Degree of Tilt: 69°
• Degree of Trim: -4° through +16°
• Dry Weight: 28 kg (61 lbs)
• Steering Angle (maximum): 90° from center, either direction
• Warranty: Limited 3-Year Pleasure, 3-Year Government, 1-Year Commercial.

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