2016 Mercury FourStroke 4 HP - 20 in. Shaft

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Availability
Brochure
Year
2016
Manufacturer
Mercury
Model
FourStroke 4 HP - 20 in. Shaft

Specs

Engine

Engine Type
1 cylinder
Bore x Stroke
2.32 x 1.77 in. (59 x 45 mm)
Displacement
7.5 cid (123 cc)
Starting
Manual

Dimensions

Shaft Length
20 in. (508 mm)
Weight
57 lb. (26 kg)

General

Propshaft Horsepower
4 hp (2.9 kW)
Full Throttle Operating Range
4500-5500 rpm
Gear Ratio / Shift
2.15:1 / F-N-R
Fuel Induction
2-valve pushrod (overhead valve)
Alternator
4 lighting / 2 charging amp / 50 lighting / 25 charging watt (Optional)
Cooling
Water-cooled with thermostat
Steering
Tiller
Warranty
3 Year Corrosion, 3 Year Limited

Overview

Description

Power Tender and Skiffs. Effortlessly.



57 pounds of agile performance.

Features
  • Lightweight: Weighing just 38 and 57 pounds, respectively, our 2.5 - 3.5hp and 4 - 6hp FourStroke outboards are easy to lift and carry.
  • Generate Power: Convenience and performance you can count on. 4 amp alternator to charge a battery: exhaust relief holes and 6" prop for improved handling when reversing heavy boats; even an added rectifier to power small external lights. A 5hp FourStroke that powers your boat.
  • Shallow Water: Multiple trim positions enhance performance and enable shallow-water operation.
  • Easy to Start: Automatic decompression bleeds off cylinder pressure to reduce the pulling force required to start the engine.
  • Quiet: Through-prop exhaust on all Mercury® 4 - 6hp FourStrokes exits underwater for quiet operation.
  • Fueling Options: Mercury® 4, 5 and 6hp FourStrokes feature integral fuel tanks with an external fuel-shutoff valve, as well as a fuel-tank cap on top of the cowl. For extended range, these engines also can be connected to a remote fuel tank placed in the boat.
Specifications
  • HP / kW: 4 / 2.9
  • Engine type: 1 cylinder
  • Displacement (CID/CC): 7.5 / 123
  • Full throttle RPM: 4500-5500
  • Fuel induction system: 2-valve pushrod (overhead valve)
  • Alternator amp / Watt: 4 lighting / 2 charging amp / 50 lighting / 25 charging watt (Optional)
  • Recommended fuel: 87% octane / up to 10% ethanol
  • Recommended oil: Mercury FourStroke Oil 10W-30
  • Engine protection operator warning system: Low oil pressure, Over-rev
  • Starting: Manual
  • Steering: Tiller
  • Shaft length: 20 in. / 508 mm
  • Gearcase ratio: 2.15:1
  • Dry weight *Lightest model available: 57 lb. / 26 kg
  • CARB star rating: 3
  • Bore and stroke: 2.32 x 1.77 in. / 59 x 45 mm
  • Ignition: CDI w/electronic spark advance
  • Fuel system: Carbureted
  • Cooling system: Water-cooled with thermostat
  • Gear shift: F-N-R
  • Gearcase options: Standard
  • Trim positions: 6
  • Exhaust system: Through prop
  • Shallow water drive: Yes
  • Shallow water trim range (degrees): 16
  • Integrated fuel tank (gal / L): 0.3 / 1.1
  • Optional fuel tank (gal / L): 3.2 / 12
  • Color: Phantom Black
NOTES:
Dry weight based on lightest model available.

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