Mercury 20EH 20HP FourStroke Outboard – Electric Start, 15-Inch Shaft

The Mercury 20EH is a 20HP FourStroke outboard with electric start, tiller steering, EFI, and a 15-inch shaft.

Displacement: 333cc
Configuration: two-cylinder SOHC
Dry weight: 103 lb
Full-throttle range: 5,700–6,200 RPM
Gear ratio: 2.15:1

$1,850.64

Availability In stock and available to order

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Category: Outboard Motor Brand: Mercury SKU: 20EH

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The Mercury 20EH is a 20HP FourStroke outboard motor with electronic fuel injection, electric start, tiller steering, and a 15-inch shaft. Buyers should verify transom height, steering arrangement, electrical requirements, controls, propeller selection, and installation compatibility before ordering.

Fitment and maintenance

Confirm that the 15-inch shaft matches the transom and that the boat is rated for the motor weight and output. Follow the manufacturer documentation for mounting, fuel, electrical connections, break-in, cooling-system flushing, lubrication, and scheduled service.

Product Specifications

Mercury 20EH Outboard Motor Specs

Brand	Mercury Marine
Country of Origin	Japan
Warranty Policy	3 Years
Engine Architecture	Inline 2-Cylinder SOHC – Lightweight dual-cylinder overhead cam layout ensuring smooth low-vibration performance and optimal mechanical efficiency.
Displacement & Power	333 cc – Yields 20 horsepower at 6000 RPM with an operating full-throttle ceiling spanning from 5700 to 6200 RPM using standard 87 octane fuel.
Fuel Induction System	Electronic Fuel Injection – Direct computerized fuel induction mapping exact cylinder combustion pressure to maximize turnkey reliability and throttle linearity.
Ergonomic Tiller Handle	Adjustable Control Tiller – Center-mounted multi-function steering arm integrating forward-neutral-reverse shifting, idle trim control, and throttle friction adjusters.
Shaft & Transom Layout	15-inch Short Shaft – Form-engineered configuration specialized for standard short-transom utility craft, lightweight fishing boats, and inflatable tenders.
Control Mechanism	Electric Start Tiller – Hand-guided steering platform equipped with a key-switch electric starter paired with a manual 6-position trim and tilt lockdown.
Dry Weight Profile	103 lbs – Extremely lightweight 47 kg configuration designed to cut down on total transom load weight parameters by eliminating hydraulic components.