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FourStroke 2.5-20 HP
Engine specifications by horsepower
FourStroke 5 Propane Sail Power
PS
5
alternator amps / watts
4 amp (50 watts) lighting and charging
Start
manual
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
7.5 / 123
Integrated fuel tank
0.3Gal /1L
Dry weight *The lightest model available
59 lbs / 27 kg
engine type
1 cylinder
PS / KW
5/3.7
trim system
manual
Standard External Fuel Tank (Gal / L)
Optional
FourStroke 2.5 hp
PS
2.5
alternator amps / watts
N/A
Start
manual
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
5.2 / 85
Integrated fuel tank
0.3Gal /1L
Dry weight *The lightest model available
41 lbs / 18 kg
engine type
1 cylinder
PS / KW
2.5/1.8
trim system
manual
Standard External Fuel Tank (Gal / L)
N/A
FourStroke 3.5 hp
PS
3.5
alternator amps / watts
N/A
Start
manual
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
5.2 / 85
Integrated fuel tank
0.3Gal /1L
Dry weight *The lightest model available
41 lbs / 18 kg
engine type
1 cylinder
PS / KW
3.5/2.6
trim system
manual
Standard External Fuel Tank (Gal / L)
N/A
FourStroke 4 PS
PS
4
alternator amps / watts
N/A
Start
manual
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
7.5 / 123
Integrated fuel tank
0.3Gal /1L
Dry weight *The lightest model available
41 lbs / 18 kg
engine type
1 cylinder
PS / KW
4/2.9
trim system
manual
Standard External Fuel Tank (Gal / L)
Optional
FourStroke 5 HP
PS
5
alternator amps / watts
N/A
Start
manual
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
7.5 / 123
Integrated fuel tank
0.3Gal /1L
Dry weight *The lightest model available
57 lbs / 26 kg
engine type
1 cylinder
PS / KW
5/3.7
trim system
manual
Standard External Fuel Tank (Gal / L)
Optional
FourStroke 6 HP
PS
6
alternator amps / watts
N/A
Start
manual
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
7.5 / 123
Integrated fuel tank
0.3Gal /1L
Dry weight *The lightest model available
57 lbs / 26 kg
engine type
1 cylinder
PS / KW
6/4.4
trim system
manual
Standard External Fuel Tank (Gal / L)
Optional
FourStroke 8 HP
PS
8
alternator amps / watts
12 amp (145 watt) electric
Start
Manual, Electric (w/ manual backup)
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
12.8 cu in (209cc)
Integrated fuel tank
N/A
Dry weight *The lightest model available
88 lbs / 40 kg
engine type
Inline 2
PS / KW
8/6.0
trim system
manual
Standard External Fuel Tank (Gal / L)
3.2Gal /12L
FourStroke 9.9 hp
PS
9.9
alternator amps / watts
12 amp (145 watt) electric
Start
Manual, Electric (w/ manual backup)
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
12.8 cu in (209cc)
Integrated fuel tank
N/A
Dry weight *The lightest model available
85lbs / 38.5kg; 100 lbs/45.5 kg (CT Model)
engine type
Inline 2
PS / KW
9.9/7.4
trim system
Manual, Power tilt (CT model)
Standard External Fuel Tank (Gal / L)
3.2Gal /12L
FourStroke 15
PS
15
alternator amps / watts
12 amp (145 watt) electric start models
Start
Manual, Electric (w/ manual backup)
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
20.3 / 333
Integrated fuel tank
N/A
Dry weight *The lightest model available
99 lbs / 45 kg
engine type
Inline 2
PS / KW
15/11.1
trim system
Manual, Power tilt
Standard External Fuel Tank (Gal / L)
3.2Gal /12L
FourStroke 20 hp
PS
20
alternator amps / watts
12 amp (145 watt) electric start models
Start
Manual, Electric (w/ manual backup)
Compatible With SmartCraft Digital Technology
No
displacement (displacement / CC)
20.3 / 333
Integrated fuel tank
N/A
Dry weight *The lightest model available
99 lbs / 45 kg
engine type
Inline 2
PS / KW
20/14.7
trim system
Manual, Power tilt
Standard External Fuel Tank (Gal / L)
3.2Gal /12L
short description
Battery-free EFI
The battery-free EFI technology allows you to move forward reliably. This technology is already included in the manually started 8 and 20 HP models. This makes you independent because you do not need an additional starter battery.
Convenient maintenance
We've made maintenance easier with features like a drip-free oil change system, an easy-access fuel filter, and a lifetime maintenance-free valve train.
Electronic Fuel Injection (EFI)
From the moment you start the engine to the moment you ease off the throttle: With EFI technology, the 8 and 20 hp outboards deliver instant power. Safe starting in all weather conditions. Smooth, efficient acceleration. Maximum fun.
Advanced tiller
With a range of adjustment options, easy-to-reach controls and the ability to adjust for left or right handed use (on select models), Mercury tiller handles give you complete control of your adventures.
Easy to transport
Easy to launch and lightweight, FourStroke outboards from 2.5 to 20 HP let you take the fun wherever it's needed.
Selected Resources
Learn more about how Mercury makes your time on the water special.
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