Legendary Reliability UP FOR ANYTHING

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 is the best-selling 150-horsepower four stroke of all time. 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

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

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

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).

Two-Stroke Performance from a Four Stroke

Four valves per cylinder maximizes combustion efficiency in a way that no two stroke can, delivering the utmost in clean, quiet power and performance.

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

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.

Incredible Low and Mid-Range Torque

Variable Camshaft Timing (VCT), available on F200 and F175, advances or slows the camshaft timing based on engine load and RPM, improving intake and exhaust efficiency and boosting torque in the 2,000 to 3,500 RPM range

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

Repower Ready

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

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

IN-LINE 4 200 hp

The lightest DOHC outboard in its class, this I-4 is the perfect, lightweight 200-hp solution for small- to medium-size boats.

Compatible with mechanical controls or digital Command Link Plus^® or Helm Master^® EX 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

IN-LINE 4 175 hp

The F175 is 30 pounds 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 controls or digital Command Link Plus^® or Helm Master^® EX 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

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 controls or digital Command Link Plus^® or Helm Master^® EX 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

200 hp
175 hp
150 hp

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).

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

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

View Bulletins for all Models

Perf. Bulletins

200 hp
175 hp
150 hp