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FourStrokes
75 - 115 hp | 40 - 60 hp | 25 - 30 hp | 20 hp & Below
Taking the fun with you is a great advantage of inflatable boats and small fishing boats. Mercury offers a complete line of portable FourStroke outboards that are extremely light, with the widest range of models to choose from. The entire line makes operation and portability easy with smart, simple features. Plus, clean, quiet, fuel-efficient FourStroke performance makes them the obvious power of choice.
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20 hp |
15 hp |
15 hp ProKicker |
9.9 hp BigFoot |
9.9 hp ProKicker |
9.9 hp |
| HP @ Prop |
20 |
15 |
9.9 |
| kW @ Prop |
14.9 |
11.1 |
7.3 |
| Max RPM (WOT) |
5400-6100 |
5000 - 6000 |
| Cylinder/Configuration |
2 (in-line) |
2 Single Overhead Cam |
2 (in-line) |
| Displacement (CID/cc) |
21.4/351 |
12.8/209 |
| Bore & Stroke (in) |
2.40 x 2.36 |
2.16 x 1.73 |
| Bore & Stroke (mm) |
61 x 60 |
55 x 44 |
| Cooling System |
Water-cooled w/thermostat |
N/A |
Thermostatic control |
| Ignition System |
CDI w/ electric spark advance |
| Starting |
Manual or electric |
Manual or electric (with manual backup and auto-decompression) |
Electric with manual backup and auto-decompression |
Manual or Electric |
| Gear Ratio |
2.15:1 |
2.42:1 |
2.08:1 |
| Gear Shift |
F-N-R (Shift-in-Handle Tiller or Remote Control) |
F-N-R |
| Steering |
Tiller or remote |
| Alternator Amp |
12V / 11 Amp |
12V-11 Amp (optional on manual start models) |
12V / 11 amp |
6 amp |
| Alternator Watt |
139 |
76 |
| Trim & Tilt |
6 or power tilt |
6 positions (with shallow water drive) or power tilt |
Power tilt (with kicker straps) |
5 |
Power tilt |
5 |
| Shallow Water Drive |
Standard |
N/A |
Standard |
| Exhaust System |
Through prop |
| Lubrication System |
Wet sump |
Wet sump pressurized |
| Recommended Oil |
Mercury 4-Stroke Outboard Oil |
| Oil Capacity |
1.0 L / 1.1 Qt. |
800 mL / 27 oz |
| Fuel Induction System |
2-valve single overhead cam |
1 carburetor |
2-valve single overhead cam |
| Remote Fuel Tank |
Standard |
N/A |
Standard |
| Remote Fuel Tank (US Gal) |
6.6 |
N/A |
3.2 |
| Remote Fuel Tank (L) |
25 |
N/A |
12 |
| Shaft Length (inches) |
15/20 |
20 / 25 |
20/25 |
15/20/25 |
| Shaft Length (mm) |
381/508 |
508 / 635 |
508/635 |
381/508/635 |
| Dry Weight (lbs.) |
115 |
132 |
96 |
108 |
84 |
| Dry Weight (kg.) |
52 |
60 |
43 |
49 |
38 |
| Operator Warning System |
Low oil pressure / Over-rev |
Low oil pressure |
N/A |
Low oil pressure |
| Available Propellers |
Standard equipment |
9 pitch / 3-blade aluminum |
7 pitch / 4-blade aluminum (silver) |
Standard equipment |
| CARB Star Rating |
3 |
N/A |
3 |
| Warranty |
3 Year Limited and 3 Year Limited Corrosion |
3 years |
3-year limited & 3-year limited corrosion |
3 years |
| |
8 hp |
6 hp |
5 hp |
4 hp |
3.5 hp |
2.5 hp |
| HP @ Prop |
8 |
6 |
5 |
4 |
3.5 |
2.5 |
| kW @ Prop |
5.9 |
4.4 |
3.7 |
2.9 |
2.6 |
1.9 |
| Max RPM (WOT) |
5000-6000 |
4500-5500 |
5000-6000 |
| Cylinder/Configuration |
2 (inline) |
1 |
| Displacement (CID/cc) |
12.8/209 |
7.5/123 |
5.2/85 |
| Bore & Stroke (in) |
2.16 x 1.73 |
2.32 x 1.77 |
2.16 x 1.42 |
| Bore & Stroke (mm) |
55 x 44 |
59 x 45 |
55 x 36 |
| Cooling System |
Freshwater thermostatic control |
Water-cooled w/thermostat |
| Ignition System |
CDI w/electric spark advance |
CDI |
CDI w/electric spark advance |
| Starting |
Manual or electric |
Manual |
| Gear Ratio |
2.08:1 |
2.15:1 |
| Gear Shift |
F-N-R |
F-N |
| Steering |
Tiller |
Tiller with 360° turning |
| Alternator Amp |
6 amp |
Optional 4-amp lighting/2-amp charging |
N/A |
N/A |
| Alternator Watt |
76 watt available |
Optional 50-watt lighting/25-watt charging |
N/A |
N/A |
| Trim Positions |
5 |
6 |
4 |
| Shallow Water Drive |
Standard |
N/A |
N/A |
| Exhaust System |
Through prop |
N/A |
Above prop |
| Lubrication System |
Wet sump pressurized |
Splash |
| Recommended Oil |
Mercury 4-Stroke Outboard Oil |
| Oil Capacity |
800 mL / 27 oz |
450 mL / 15 oz |
300 mL / 10 oz |
| Fuel Induction System |
2-valve single overhead cam |
2-valve pushrod |
2-valve single overhead cam |
| Integral Fuel Tank (Gal) |
N/A |
N/A |
N/A |
0.39 (remote 3.2 Gal. optional) |
0.3 |
| Integral Fuel Tank (L) |
N/A |
N/A |
N/A |
1.1 (remote 12L optional) |
0.95 |
| Remote Fuel Tank |
Standard |
12 L / 3.2 Gal standard |
N/A |
N/A |
N/A |
| Remote Fuel Tank (US Gal) |
3.2 |
N/A |
N/A |
N/A |
N/A |
N/A |
| Remote Fuel Tank (L) |
12 |
N/A |
N/A |
N/A |
N/A |
N/A |
| Shaft Length (inches) |
15/20 |
15 |
| Shaft Length (mm) |
381/508 |
381 |
| Dry Weight (lbs.) |
84 |
55 |
38 |
| Dry Weight (kg.) |
38 |
25 |
17 |
| Operator Warning System |
Low oil pressure |
Overheat |
Low oil pressure |
N/A |
N/A |
| Available Propellers |
Standard equipment |
Consult current dealer propeller guide |
Standard equipment |
| CARB Star Rating |
3 |
N/A |
N/A |
3 |
| Warranty |
3 years |
3 years, 3 year corrosion warranty |
3 years |
Features
Best Suited For:
15 - 9.9 - 8 FourStrokes
Small inflatables
Sail boats
Small aluminum boats (10' to 14')
Trolling (auxiliary kicker application)
Utility
9.9 BigFoot - 9.9 ProKicker
BigFoot FourStrokes
Sail boats
Trolling (auxiliary kicker application)
Small pontoons
Utility
6 - 4 FourStrokes
Small inflatables
Dinghies
Sail boats
Small aluminum boats (below 12')
3.5 - 2.5 FourStrokes
Canoes
Small inflatables
Dinghies
20 hp
- Overhead cam provides smooth, quiet and efficient operation
- Unique engine mount system reduces vibration
- Accelerator pump ensures responsive acceleration
- Meets all world wide emission requirements
- Multi-function tiller controls shift, steering, throttle, throttle friction, trim and stop controls
- Comes standard in 15" and 20" shaft lengths
- Options include manual trim or power tilt, as well as Manual start and Electric+Manual start
15 hp
- The 15 hp FourStroke powers accessories with its reliable alternator (6-amp, 76-watt for manual-start models or 10-amp, 126-watt for electric-start models).
- The through-prop exhaust submerges and minimizes exhaust noise.
- Our overrev protection feature limits engine rpm if maximum engine speed is exceeded.
9.9 hp BigFoot and ProKicker
- Our 2.42:1 gear ratio and four-blade propeller deliver maximum thrust and slow trolling speeds.
- Peace of mind is provided by durable gearcase design and dual water inlets.
- Available in two shaft lengths, 20 and 25 inches, for multiple applications.
- The standard water-cooled fuel pump provides consistent fuel delivery - even under hot ambient conditions, regardless if the engine is pushing heavy loads at peak power or trolling at idle speeds for long periods.
- The 9.9 ProKicker features a compact, integrated power tilt and a heavy-duty transom bracket for maximum strength, speed and durability.
- 9.9 ProKicker graphics compliment the OptiMax ProXS and Verado main outboards. Installed next to a ProXS or Verado outboard, the improved ProKicker graphics will make your rig stand out from the rest of the pack.
8 and 9.9 hp
- The multifunction tiller handle design provides one-hand operation of shifting, stopping, throttle control, tilting and steering.
- A standard manual recoil, even on electricstart models, provides added safety in the event of a drained battery.
- Easy starting and fast idle warm-up are provided by manual choke and primer.
- Only 7 pounds heavier than a comparable two-stroke, it's one of the lightest fourstrokes in its class.
4, 5, and 6 hp
- A standard automatic cylinder decompression system greatly reduces starting pull force for effortless starting.
- The 4 hp model delivers ultimate portability with its integrated fuel tank and shut-off valve to prevent fuel spillage.
- A full forward-neutral-reverse side shift is standard.
2.5 and 3.5 hp
- Patented one-piece integrated cylinderblock design provides added reliability by eliminating gaskets and fasteners and makes the powerhead much more compact and lightweight.
- Check oil level without removing the cowling with convenient, easy-to-view sight gauge.
- This engine delivers maximum performance with the largest displacement in the 2.5 hp category.
- A twist-grip throttle and 360-degree steering make it easy to use.
Lineup
20 hp
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15 hp
15 ProKicker
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8 hp
9.9 hp
9.9 BigFoot
9.9 ProKicker
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4 hp
5 hp
6 hp
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2.5 hp
3.5 hp
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