
2025 Yamaha Outboards In-line 4 150 hp Base
Description
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:Power and Performance
Impressive Power-to-WeightA 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 PowerPrecision 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 ChargingWith 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 Ready26-inch mounting centers and a bolt pattern that matches previous two strokes make In-Line Fours flexible for most repowers.
Variable TrollingOur 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 FlushingA Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.
Specifications
| Manufacturer | Yamaha Outboards | 
| Model | In-line 4 150 hp | 
| Year | 2025 | 
| Condition | New | 
| Trim Name | Base | 
| Generic Type (Primary) | Four Stroke | 
| 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 | NGK-LFR6A-11 / LFR5A-11 | 
| Starter | System: Electric | 
| Alternator Output, Maximum | Output at W.O.T.: 35 / 50 Amp | 
| Fuel System | Ethanol Blend Limit: 10% Maximum | 
| Fuel Type | Recommended: Octane 87 / Octane 89 | Recommended Filtration: Yamaha 10 Micron Fuel/Water Separating Filter (external) | 
| Length | Shaft: 20" / 25" | 
| Dimensions | Degree of Tilt: 70° | Degree of Trim: -4° through +16° | Mounting Centers: 26" | 
| Oil capacity | 4.5L / 4.3L | 
| Weight | 20” Mechanical 509 lbs (231 kg) | 20” DEC 522 lbs (237 kg) | 
| Features | Intake: 16 | 
| Warranty | Limited 3 Year Limited Pleasure Boat - 1 Year Limited Commercial | 









