Legendary Reliability UP FOR ANYTHING

I-4 Four Strokes

I-4 Four Strokes

Digital: 200 hp, 175 hp, 150 hp
Mechanical 200 hp, 175 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. That record of performance spawned a remarkable family line that continues with the F175 and F200. Now, more boaters can enjoy Yamaha’s technologically advanced I-4 line than ever before. Whether your rigging is digital or mechanical, the entire lineup is compatible with your control preference. It’s just one of the ways the I-4 line keeps getting better and better, year after year.

Owners Manuals
Helm Master Compatible
3yearlimitedwarranty
IBEX Innovation Winner
The XTO Offshore DEC is a product of our CommandBlue™ philosophy, approaching engineering and design from the perspective of the boater, resulting in user-friendly products that increase customer satisfaction and confidence on the water.
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View the 200 hp
F200 (i4)
Digital & Mechanical
View the 175 hp
F175 (i4)
Digital & Mechanical
View the 150 hp
F150 (i4)
Digital & Mechanical

Compatible controls for every platform

Now, the F200, F175 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 the these model are the same as those on our HPDI® two strokes, making it easy for you to step up or down in horses without having to replace your rigging.

POWER & PERFORMANCE

 
Impressive Power-to-Weight
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 class-leading power-to-weight and making the F175 nearly 30 pounds lighter than its closest 1.7-liter competitor.

Optimum Power
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 (except F150 Mechanical).

Better Charging
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

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

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

i4 Convenience & Control

Convenience & 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 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.

  • Extended Trim

    Extended Trim Range delivers better acceleration-to-plane and top-end speed. The tilt range is a full 70° for tilting the engine above the waterline.

  • 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.

In-line 4 Videos:

 

Yamaha In-Line Four

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Meet the Line-Up

F200 (i4)

IN-LINE 4 200 hp

With impressive power-to-weight and volumetric efficiency, 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
  • Runs on economical 89 octane
  • Only 487 pounds (20” shaft model)
  • 20” or 25” shaft options (LH rotation available in 25” shaft digital control)
  • 50-amp alternator provides 13 percent more power than V6 3.3-liter F200
Controls
Gauges
Prop Selector
F175 (i4)

IN-LINE 4 175 hp

The F175 is lighter than its closest 1.7-liter competitor, but it still delivers breathtaking acceleration, midrange punch and impressively smooth performance. It’s compatible with either mechanical controls or digital controls.

  • Compatible with mechanical, digital or Helm Master® EX boat controls
  • Only 483 pounds (20” shaft model)
  • Available in 20” or 25” shafts
  • A 50-amp alternator to power an array of onboard electronics
Controls
Gauges
Prop Selector
F150 (i4)

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 now mechanical or digital compatible, making it available to more boaters than ever before.

  • Compatible with mechanical, digital or Helm Master® EX boat controls
  • Only 478 pounds (20” shaft model)
  • Available in 20” or 25” shafts
  • Powerful 50-amp alternator (2.8-liter digital) or 35-amp alternator (2.7-liter mechanical)
Controls
Gauges
Prop Selector

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 † 220 kg (487 lbs) - 221 kg (489 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
Ignition TCI Microcomputer
Spark Plug NGK-LFR6A-11
Alternator Output 50 Amp
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°
Dry Weight 20" shaft / 220 kg (487 lbs), 25" shaft / 221 kg (489 lb)
Mounting Centers 26"
Steering Angle (maximum) 32° 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 2.8L
Bore x Stroke 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower 175 hp @ 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 † 219 kg (483 lbs) - 221 kg (487 lbs)
Recommended Fuel Octane 87
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
Alternator Output 50 Amp
Starting System Electric
Lubrication Wet Sump
Engine Oil Capacity 4.5L/4.3L
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°
Dry Weight 20" shaft / 219 kg (483 lb), 25" shaft 220 kg (485 lb)
Mounting Centers 26"
Steering Angle (maximum) 32° 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" shaft / 217kg (478 lbs), 25" shaft / 221kg (487 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
Alternator Output 35 - 50 Amp
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°
Dry Weight 217kg (478 lbs) - 222kg (489 lbs)
Mounting Centers 26"
Steering Angle (maximum) 32° 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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View Bulletins for all Models

Perf. Bulletins