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Up For Anything Legendary Reliability


I-4 Four Strokes

Digital: 200 hp, 150 hp   Mechanical 200 hp, 150 hp

There’s a good reason why the legendary Yamaha F150 has enjoyed over a decade of unrivaled popularity. Powerful, light, nimble and compact, boaters know that its proven reliability is unmatched for everything from pontoons to flats boats to deep-V hulls. In fact, its versatile technology inspired the F200 and has served as the reliable foundation for remarkable advancements for both models. Whether your rigging is digital or mechanical, the entire lineup is compatible with your control preference. Plus, new integrated steering lets boaters hit the water with responsive performance, a cleaner bilge and more space on the boat for storage and comfort. Add in the sleek, modern cowling design and digital models now available in pearlescent white, and the I-4s just keep getting better and better, year after year.

Owner's Manuals
helm master compatible
three year limited warranty
ibex innovation winner

Compatible controls for every platform

The F200 and F150 are available with either digital or mechanical controls and even our next generation boat control system Helm Master® EX. In addition, the 26-inch mounting centers and bolt pattern on these models are the same as those on previous two-stroke models, making it easy for you to step up or down in horses without having to replace your rigging.*

* Compatibility and equipment condition dependent.

POWER & PERFORMANCE

Impressive Power-to-Weight

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

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

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.

Quick Acceleration

Quick Acceleration


A 10mm Offset Crankshaft allows for larger intake volume design. Four tuned intake tubes boost torque in low and mid-speed ranges for quick acceleration.

Powerful Hole Shot

Powerful Hole Shot


The Composite Intake Manifold is a lightweight, compact design, making these engines very versatile. Long Tube Intake Tracks are tuned to increase airflow, boosting low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smoother operation.

RELIABILITY & DURABILITY

RELIABILITY & DURABILITY

Corrosion Resistance


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 In-Line Four-Stroke engines

Convenience & Control

  • Integrated Steering

    New integrated steering gives you responsive control, a cleaner bilge and more space and storage on your boat.

  • 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 I-4 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.

  • Quieter Operation

    Yamaha's Shift Dampener System greatly reduces the noise commonly associated with shifting gears. Using a special design and components, much of the force of shifting is absorbed, resulting in far quieter and smoother operation.

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In-Line 4 Videos

Yamaha 4.2L V6

Yamaha 4.2L V6

Meet the Line-Up

XF450

In-Line 4 200 hp

With impressive power-to-weight, volumetric efficiency and integrated steering, this I-4 is the perfect, lightweight 200-hp solution for small- to medium-size boats. Its unique Variable Camshaft Timing (VCT) improves intake and exhaust efficiency and boosts torque throughout the rev range.

  • Compatible with mechanical, digital or Helm Master® EX boat controls
  • Comes with integrated electro-hydraulic steering for digital models and integrated hydraulic steering for mechanical models
  • Runs on economical 89 octane
  • Only 525 pounds (20” shaft DEC model)
  • 20” or 25” shaft options (LH rotation available in 25” shaft digital control)
  • 50-amp alternator provides plenty of power for onboard electronics
  • Digital F200 available exclusively in new pearlescent white
  • Mechanical F200 available in signature Yamaha gray
XF450

In-Line 4 150 hp

The F150 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.

  • Compatible with mechanical, digital or Helm Master® EX boat controls
  • Comes with integrated electro-hydraulic steering for digital models and integrated hydraulic steering for mechanical models
  • Only 520 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

Specs & Compare

Engine Comparison
Engine Type Inline 4
Displacement 2.8L
Bore x Stroke 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower 200hp @ 5500 rpm
Full Throttle RPM Range 5000 ~ 6000 rpm
Alternator Output at W.O.T. 50 Amp
Compression Ratio 10.3:1
Fuel Induction System EFI
Weight † Mechanical - 234 kg (516 lbs) / DEC - 238 kg (525 lb)
Recommended Fuel Octane 89
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration Yamaha 10 Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating 3-Star
Exhaust Through Propeller
Intake 16-valve
Ignition TCI Microcomputer
Spark Plug NGK-LFR6A-11
Starting System Electric
Lubrication Wet Sump
Engine Oil Capacity 4.5L/4.3L w/without filter
Recommended Cooling Thermostatic Control
Ethanol Blend Limit 10% Maximum
Gear Ratio 1.86:1
Gear Shift Forward, Neutral, Reverse
Shaft Length 20" / 25"
Degree of Tilt 70°
Degree of Trim -4° through +16°
Mounting Centers 26"
Steering
Steering Angle (maximum) 30° from center, either direction
Warranty Limited 3 Year Limited Pleasure Boat - 1 Year Limited 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).

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Engine Comparison
Engine Type Inline 4
Displacement 2.7L (Mechanical) / 2.8L (DEC)
Bore x Stroke 94 x 96.2 (3.70 x 3.79in) / 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower 150hp @ 5500 rpm
Full Throttle RPM Range 5000 ~ 6000 rpm
Alternator Output at W.O.T. 35 / 50 Amp
Compression Ratio 9.0:1 / 10.3:1
Fuel Induction System EFI
Weight † 20” Mechanical 231kg (509 lbs) 20” DEC 237kg (522 lbs)
Recommended Fuel Octane 87 / Octane 89
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration Yamaha 10 Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating 3-Star
Exhaust Through Propeller
Intake 16
Ignition TCI Microcomputer
Spark Plug NGK-LFR6A-11 / LFR5A-11
Starting System Electric
Lubrication Wet Sump
Engine Oil Capacity 4.5L / 4.3L
Recommended Cooling Thermostatic Control
Ethanol Blend Limit 10% Maximum
Gear Ratio 2.00:1
Gear Shift F-N-R
Shaft Length 20" / 25"
Degree of Tilt 70°
Degree of Trim -4° through +16°
Mounting Centers 26"
Steering
Steering Angle (maximum) 30° from center, either direction
Warranty Limited 3 Year Limited Pleasure Boat - 1 Year Limited 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).

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Perf. Bulletins

Manufacturer PowerMatched Boat Model Engine Configuration Bulletin
Manufacturer PowerMatched Boat Model Engine Configuration Bulletin