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Four Stroke

Four stroke outboards, their features, functions and specifications

Outstanding Fuel Economy and Clean Emissions

Yamaha offers a full model lineup in four stroke engines from 425ps to 2.5ps that deliver superb fuel economy and cleaner emissions. Outboards of 20ps and higher are equipped with high-performance fuel injection to take that performance to even higher levels. In many models, our advanced technology realizes acceleration performance and a lightweight, compact design.

F425A

Engine Type 32-valve, DOHC with VCT, 60 deg. V8
Displacement [cm3] 5559
Bore x Stroke [mm] 96.0 x 96.0
Max. Prop Shaft Output [kW (ps)] @r/min 316.9 (425)/5500
Fuel Induction System Direct Fuel Injection
Engine Transom Height[mm (inch)] X: 640(25.2), U: 767(30.2), E: 894(35.2)
Dry Weight [kg] * 442-463
Starting System Electric Starter
Controls Digital Electronic Control
Tilt System Power Trim & Tilt
Lubrication System Wet sump
Digital Network Available

F375A

Engine Type 32-valve, DOHC with VCT, 60 deg. V8
Displacement [cm3] 5559
Bore x Stroke [mm] 96.0 x 96.0
Max. Prop Shaft Output [kW (ps)] @r/min 279.6 (375)/5500
Fuel Induction System Direct Fuel Injection
Engine Transom Height[mm (inch)] X: 640(25.2), U: 767(30.2), E: 894(35.2)
Dry Weight [kg] * 442-463
Starting System Electric Starter
Controls Digital Electronic Control
Tilt System Power Trim & Tilt
Lubrication System Wet sump
Digital Network Available

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