Mercury FourStroke

Complete outboard lineup specifications — 2.5 to 300 horsepower.

115–300 HP Models

Specification 300 V8250 V8225 V6200 V6175 V6150135115
Horsepower 300 hp250 hp225 hp200 hp175 hp150 hp135 hp115 hp
Max RPM 5200–60005200–60005200–60005000–58005000–58005000–58004800–53005000–6000
Configuration V8 (64°) 32-V DOHCV8 (64°) 32-V DOHCV6 (64°) 24-V DOHCV6 (64°) 24-V DOHCV6 (64°) 24-V DOHC4-Cyl4-Cyl4-Cyl
Displacement 4.6 L4.6 L3.4 L3.4 L3.4 L3.0 L3.0 L2.1 L
Bore × Stroke 92 × 8692 × 8692 × 8692 × 8692 × 86102 × 92102 × 9290 × 81
Fuel System EFI w/ AROEFI w/ AROEFI w/ AROEFI w/ AROEFI w/ AROMulti-Port EFIMulti-Port EFIMulti-Port EFI
Ignition SmartCraft PCM 112SmartCraft PCM 112SmartCraft PCM 112SmartCraft PCM 112SmartCraft PCM 112SmartCraft ECMSmartCraft ECMSmartCraft ECM
Alternator 85 A85 A85 A85 A85 A60 A60 A35 A
Gear Ratio 1.75:11.75:11.85:11.85:11.85:11.92:11.92:12.07:1
Controls SmartCraft DTSSmartCraft DTSDTS or MechanicalDTS or MechanicalDTS or MechanicalMechanical F-N-RMechanical F-N-RMechanical F-N-R
Steering Electric or HydraulicElectric or HydraulicElectric or HydraulicElectric or HydraulicElectric or HydraulicElectric or HydraulicElectric or HydraulicRemote or tiller
Dry Weight 239 kg239 kg215 kg215 kg215 kg206 kg206 kg164 kg
Propeller Drive Flo-Torq SSR HDFlo-Torq SSR HDFlo-TorqFlo-TorqFlo-TorqFlo-TorqFlo-TorqFlo-Torq

40–90 HP Models

Specification 9075605040
Horsepower 90 hp (67 kW)75 hp (56 kW)60 hp (45 kW)50 hp (37 kW)40 hp (30 kW)
Max RPM 5000–60004500–55005500–60005500–60005500–6000
Cylinders 44444
Displacement 2.1 L (2065 cc)2.1 L (2065 cc)995 cc995 cc995 cc
Bore × Stroke 90 × 81 mm90 × 81 mm65 × 75 mm65 × 75 mm65 × 75 mm
Fuel System Multi-Port EFIMulti-Port EFIEFIEFIEFI
Ignition SmartCraft ECMSmartCraft ECMSmartCraft ECMSmartCraft ECMSmartCraft ECM
Alternator 35 A35 A18 A18 A18 A
Gear Ratio 2.07:12.07:11.83:11.83:12.33:1
Controls Mechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-R
Steering Remote or tillerRemote or tillerRemote or tillerRemote or tillerRemote or tiller
Dry Weight 164 kg164 kg114 kg114 kg121 kg (CT: 128 kg)
Propeller Drive Flo-TorqFlo-TorqFlo-TorqFlo-TorqFlo-Torq

2.5–30 HP Portable Models

Specification 30 EFI25 EFI20 EFI15 EFI9.986543.52.5
Horsepower 30 hp25 hp20 hp15 hp9.9 hp8 hp6 hp5 hp4 hp3.5 hp2.5 hp
Max RPM 5800–62005400–58005700–62005700–62005000–60005000–60005000–60004500–55004500–55005000–60004500–5500
Cylinders 33322211111
Displacement 500 cc500 cc333 cc333 cc209 cc209 cc123 cc123 cc123 cc85 cc85 cc
Bore × Stroke 61 × 5761 × 5761 × 5761 × 5755 × 4455 × 4459 × 4559 × 4559 × 4555 × 3655 × 36
Fuel System EFIEFIEFIEFICarburetedCarburetedCarburetedCarburetedCarburetedCarburetedCarbureted
Ignition CDICDICDICDICDICDICDICDICDICDICDI
Alternator 17 A17 A12 A12 A6 A (elec. start)N/AN/AOpt. 4 AN/AN/AN/A
Starting Manual or electricManual or electricManual or electricManual or electricManual or electricManualManualManualManualManualManual
Gear Ratio 2.17:12.17:12.15:12.15:12.08:12.08:12.15:12.15:12.15:12.15:12.15:1
Controls Mechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-N-RMechanical F-NMechanical F-N
Steering Tiller or RemoteTiller or RemoteTiller or RemoteTiller or RemoteTiller or RemoteTillerTiller – Side ShiftTiller – Side ShiftTiller – Side ShiftTiller – Side Shift360° Tiller
Fuel Tank Separate 25 LSeparate 25 LSeparate 12 LSeparate 12 L12 L12 LIntegralIntegralIntegralIntegralIntegral
Dry Weight 65.7 kg60.1 kg47.5 kg38.4 kg38.4 kg26.2 kg26.2 kg26.2 kg18.4 kg18.4 kg18.4 kg
Propeller Drive Splined Rubber HubSplined Rubber HubSplined Rubber HubSplined Rubber HubSplined Rubber HubSplined Rubber HubSplined Rubber HubSplined Rubber HubSplined Rubber HubCompositeComposite
All bore × stroke values in mm. Dry weight is base engine without oil, propeller, or integral steering cylinder of lightest model. CT = Command Thrust. All models require Regular Unleaded (91 RON).
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