Mercury 20ELH 20HP 20in Four Stroke Electric Start Tiller Outboard Motor
Description
Cut fuel consumption on transport skiffs with the Mercury 20ELH Four Stroke Tiller Motor engineered for long-transom commercial tenders. The 333 cc twin-cylinder four-stroke engine produces 20 brake horsepower at 6200 RPM. Precision electronic fuel injection burns just 1.5 gallons per hour at cruising speeds, delivering quiet operation and low exhaust emissions for continuous harbor service.
Low-copper aluminum casting metallurgy prevents galvanic corrosion in severe commercial harbor environments. Cast iron cylinder liners provide long-term bore stability under continuous operating stresses. Long 20-inch shaft housings fit deep commercial transoms. Dry weight measures 107 lbs. Sump capacity holds 1.1 quarts of oil, accepting standard 5/16-inch fuel line couplers.
Key Features of Mercury 20ELH
Commercial skiff captains buy Mercury 20ELH inboard engine alternatives to obtain lightweight long-shaft tiller power for transport skiffs and work tenders. The multifunction tiller handle combines steering, throttle, and shifting into a single intuitive control arm.
- Multifunction tiller handles combine shift, throttle, steering friction, and stop button in one ergonomic grip
- Electric push-button starting combines with manual recoil backup for absolute starting reliability
- Long 20-inch shaft length keeps water pump intakes submerged beneath turbulent hull wakes
- Mercury 20ELH battery-free electronic fuel injection provides turn-key starting without engine stutter or stall
- Horizontal tiller angle adjustments allow customized operation from port or starboard seating positions
- Integrated 12-amp charging systems maintain battery voltage while running chartplotters and bilge pumps
- Freshwater washdown connections allow quick garden hose flushing without starting the motor
- Low overall engine weight preserves boat transom draft without compromising hull buoyancy
Combustion Dynamics Thermal Caps
Electronic fuel injection delivers 18.5 lb-ft of continuous torque across 2500 to 4500 RPM to lift small utility boats onto plane. Wax-pellet thermostats stabilize internal cooling water between 140°F and 160°F. Exhaust gasses exit through the propeller hub discharge, keeping sound decibels down and fuel burn near 270 g/kWh.
Transom Alignment Stringer Clearance
The 20-inch clamp bracket fastens straight onto standard 20-inch boat transoms meeting ABYC P-1 standards. Clearances demand 14 inches of splash well width to accommodate full steering articulation. Heavy manual clamp screws lock the motor securely to the transom board.
Shift Protocols Operational Limits
Tiller twist grips provide positive throttle modulation and crisp gear selection when approaching docks. Cooling water tell-tale streams require visual confirmation upon starting. This long-shaft tiller outboard is not engineered for heavy commercial tugs, dry running, or operation exceeding 6200 RPM.
- Verify raw water tell-tale stream discharge each shift
- Drain fuel water separator collection bowls every 50 hours
- Replace lower gearcase hypoid lubricant every 100 operating hours
Warranty Statement Shipping Inventory
Recreational customers receive a 3-Year factory warranty covering base engine and gearcase components. The heavy shipping crate holds the 20-inch tiller outboard motor, external 3.2-gallon fuel tank with primer line, spare pull rope, and complete technical owner manual.
Mercury 20ELH Outboard Motor Specs
| Brand | Mercury Marine |
| Country of Origin | Japan |
| Warranty Policy | 3 Years |
| Engine Architecture | Inline 2-Cylinder SOHC – Lightweight overhead cam automotive-style motor design maximizing linear mechanical efficiency and reducing internal engine drag. |
| Displacement & Power | 333 cc – Develops 20 horsepower with a wide 500 RPM full-throttle ceiling to accommodate variable prop pitches based on changing boat weights. |
| Fuel Induction System | Electronic Fuel Injection – High-efficiency computerized direct fuel spraying that allows reliable rope-start backup operation even without an attached battery. |
| Ergonomic Tiller Handle | Adjustable Control Tiller – Features integrated forward-neutral-reverse shifting, idle speed adjusters, and a throttle friction knob straight on the handle. |
| Shaft & Transom Layout | 20-inch Long Shaft – Standard long-reach drive unit optimized to prevent cooling-water intake starvation when operating in rough swells. |
| Control Mechanism | Electric Start Tiller – Hand-guided tiller configuration featuring built-in electric start keys paired with a manual 6-position trim lock system. |
| Dry Weight Profile | 103 lbs – The lightest electric-start option in the 20hp lineup checking in at 47 kg by omitting heavy hydraulic tilt components. |
You must be logged in to post a review.









Reviews
There are no reviews yet.