2016 Mercury FourStroke 8 HP - 20 in. Shaft

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Availability
Brochure
Year
2016
Manufacturer
Mercury
Model
FourStroke 8 HP - 20 in. Shaft

Specs

Engine

Engine Type
Inline 2
Bore x Stroke
2.16 x 1.73 in. (55 x 44 mm)
Displacement
12.8 cid (208 cc)
Starting
Electric, Manual

Dimensions

Shaft Length
20 in. (508 mm)
Weight
84 lb. (38 kg)

General

Trim Method
Ratcheting
Propshaft Horsepower
8 hp (5.9 kW)
Full Throttle Operating Range
5000-6000 rpm
Gear Ratio / Shift
2.08:1 / F-N-R
Fuel Induction
2 valves per cylinder, single overhead cam (SOHC)
Alternator
6 amp / 76 watt
Cooling
Water-cooled with thermostat
Steering
Tiller
Warranty
3 Year Corrosion, 3 Year Limited

Overview

Description

Start Easy



Incredibly responsive to get you going with little or no prep.

Features
  • More Thrust: Mercury® ProKicker outboards feature a deeper gearcase and a four-blade, high-thrust propeller with matching gear ratio – the perfect setup for trolling and precise control in all conditions.
  • Power Tilt: The fastest power tilt in the industry drops a Mercury 9.9 - 15hp ProKicker FourStroke outboard into the water in just five seconds. Exclusive kicker-centering straps align and secure the outboard in full tilt-up position while you’re underway.
  • Defining Durability: The ProKicker gearcase is engineered to be rugged and durable, with robust gears and bearings and a heavy-duty skeg that’s 55% thicker and twice as strong side-to-side as the previous gearcase.
  • Command Thrust: Big-time power. With a longer design and bigger components, Mercury Command Thrust was made specifically to deliver the type of power, thrust and control that wider, heavier boats demand. The Command Thrust Difference: 20% larger prop increases control especially at low speeds; Taller gearcase puts the prop deeper, below turbulent water, for improved performance; A low 2.42:1 gear ratio delivers thrust and maneuveraility that big loads demand; Oversized Antiventilation Plate. Oversized design prevents air from being drawn into the prop, which increases efficiency.
  • Total Single-Handed Tiller Control: Tiller-steered versions feature the exclusive Mercury multifunction tiller that puts shifting, throttle control (with friction for fine-tuned trolling), stopping, tilting and steering in the palm of your hand.
  • Lightweight: At only 83 pounds, these engines are very portable and improve the performance of lightweight boats.
  • Convenient and Easy Tilting: Push down on the tiller handle to easily tilt the outboard to any position, made easy with our exclusive ratcheting transom bracket.
  • Idle Smoothly: The fuel filter on 8, 9.9, 15hp and 20hp Mercury FourStrokes has been moved to keep the carburetor cleaner for reliable starting and smooth idling.
  • Maintain Your Troll: Slow-speed throttle advance has been improved, making it easier for anglers to find and hold their optimal troll speed.
  • Richer Idle Air/Fuel Mix: Tiller handle 8, 9.9, 15 and 20hp Mercury FourStrokes have a richer air/fuel mix at idle, making the engines easier to start and providing better idle running quality.
  • Simplified Start Procedure: Mercury 8 and 9.9 FourStroke outboards come standard with a three-position choke, eliminating the need for a primer button. Starting is easier and warm-ups are faster!
Specifications
  • HP / kW: 8 / 5.9
  • Engine type: Inline 2
  • Displacement (CID/CC): 12.8 / 208
  • Full throttle RPM: 5000-6000
  • Fuel induction system: 2 valves per cylinder, single overhead cam (SOHC)
  • Alternator amp / Watt: 6 amp / 76 watt
  • 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: Electric, Manual
  • Steering: Tiller
  • Shaft length: 20 in. / 508 mm
  • Gearcase ratio: 2.08:1
  • Dry weight *Lightest model available: 84 lb. / 38 kg
  • CARB star rating: 3
  • Bore and stroke: 2.16 x 1.73 in. / 55 x 44 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: Ratcheting
  • Exhaust system: Through prop
  • Shallow water drive: Yes
  • Shallow water trim range (degrees): 16
  • Integrated fuel tank (gal / L): 3.2 / 12
  • Remote fuel tank standard (gal / L): 3.2 / 12
  • Color: Phantom Black
NOTES:
Dry weight based on lightest model available.

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