2025 Yamaha Outboards In-line 4 150 hp Base

2025 Yamaha Outboards In-line 4 150 hp Base

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  • Year 2025
  • Make Yamaha Outboards
  • Model In-line 4 150 hp
2025 Yamaha Outboards In-line 4 150 hp Base

2025 Yamaha Outboards In-line 4 150 hp Base

2025 Yamaha Outboards In-line 4 150 hp

The legendary Yamaha F150 has enjoyed over a decade of unrivaled popularity. Powerful, light, nimble, and compact, boaters know its proven reliability and performance is unmatched for a broad range of boat styles and hulls. In fact, its versatile technology inspired the F200, which has also quickly become a favorite. Now with integrated steering, both the F150 and F200 let boaters hit the water with responsive performance, a cleaner bilge and more space on the boat for storage and comfort. Year after year, Yamaha’s In-Line Fours just keep getting better and better.

The In-Line Four 150 is one that started it all and it’s more popular than ever. Powerful, light and compact, it’s mechanical or digital compatible and uses integrated steering, making it more streamlined and responsive than ever before.

Features may include:
  • Comes with integrated electro-hydraulic steering for digital models and integrated hydraulic steering for mechanical models
  • Only 509 pounds (20” shaft DEC model)
  • Available in 20” or 25” shafts
  • Powerful 50-amp alternator (2.8-liter digital) or 35-amp alternator (2.7-liter mechanical)
  • Digital F150 available in new pearlescent white and signature Yamaha gray
  • Mechanical F150 available in signature Yamaha gray

Power and Performance

Impressive Power-to-Weight

A proven 16-valve DOHC In-Line design, with four valves per cylinder maximizes efficiency and power. It also streamlines design, giving the F200 impressive power-to-weight.

Optimum Power

Precision Multi-Point Electronic Fuel Injection and long-track intake system combine to maximize power and fuel efficiency across the line of In-Line Fours.

Better Charging

With up to 50-amp alternators, our In-Line Fours provide plenty of power for a range of electronics, which comes in handy, now that they're all compatible with digital controls.

Convenience and Control

Repower Ready

26-inch mounting centers and a bolt pattern that matches previous two strokes make In-Line Fours flexible for most repowers.

Variable Trolling

Our entire In-Line Four Series has a user adjustable trolling speed. This allows for precision adjustment of trolling in 50-RPM increments when equipped with a Yamaha digital gauge. Trolling range varies based on model.

Easy Engine Flushing

A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.

Engine

Engine Type Inline 4
Engine Power Prop Shaft: 150hp @ 5500 rpm
Displacement Mechanical: 2.7L / DEC: 2.8L
Bore 3.70 in (94 mm) x 3.79 in (96.2 mm)
Stroke 3.78 in (96 mm) x 3.79 in (96.2 mm)
Compression Ratio 9.0:1 / 10.3:1
Throttle Full RPM Range: 5000 ~ 6000 rpm
Steering Angle (maximum): 30° from center, either direction
Exhaust Through Propeller
Ignition TCI Microcomputer
Oil Type Recommended: Yamalube® 4M (See owner's manual)
Lubrication Wet Sump
Cooling Recommended: Thermostatic Control
Gear Ratio (Primary) 2.00:1
Gear Shifter F-N-R
Induction EFI

Spark Plug

Spark Plug NGK-LFR6A-11 / LFR5A-11

Electric

Starter System: Electric
Alternator Output, Maximum Output at W.O.T.: 35 / 50 Amp

Fuel System

Fuel System Ethanol Blend Limit: 10% Maximum
Fuel Type Recommended: Octane 87 / Octane 89 | Recommended Filtration: Yamaha 10 Micron Fuel/Water Separating Filter (external)

Dimensions

Length Shaft: 20" / 25"
Dimensions Degree of Tilt: 70° | Degree of Trim: -4° through +16° | Mounting Centers: 26"

Capacities

Oil capacity 4.5L / 4.3L

Weights

Weight 20” Mechanical 509 lbs (231 kg) | 20” DEC 522 lbs (237 kg)

Features

Features Intake: 16

Warranty

Warranty Limited 3 Year Limited Pleasure Boat - 1 Year Limited Commercial

Product Photography