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Mercury 40ELH 40HP – Four Stroke Tiller Electric Start 20-Inch
Mercury 40ELH – 40HP is an efficient 4-cycle marine engine equipped with a multi-function tiller and electric start for streamlined operation on mid-sized utility crafts. The high-displacement 4-cylinder SOHC design provides a broad powerband and exceptional low-end torque, ensuring reliable performance during long days of fishing.
- Precision Shaft Geometry Data: 20-inch long shaft geometry.
- Internal Engine Configuration Type: Inline 4-Cylinder SOHC 16-Valve.
- Advanced Fuel Delivery System: Precision Multi-Port Electronic Fuel Injection.
- Recommended Vessel Application Use: Ideal for aluminum fishing boats and utility skiffs.
- Factory Protection Service Plan: 3-year factory warranty protection plan.
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Description
Mercury 40ELH 40HP EFI Tiller
The Mercury 40ELH is a highly efficient 40HP FourStroke outboard engineered for lightweight portability and direct tiller control in the US recreational marine market. Utilizing a compact 747cc inline 3-cylinder SOHC architecture and weighing 204 lbs, this engine offers an exceptional power-to-weight ratio for aluminum fishing boats and skiffs. This 20-inch long shaft model is configured with an electric start and an ergonomic tiller handle, making it the ideal choice for boaters requiring dependable outboard propulsion systems with EFI reliability. Our marine engines provide the mechanical integrity necessary for reliable everyday maritime operation.
Operational peak performance for the Mercury 40HP occurs between 5500 and 6000 RPM. The advanced Electronic Fuel Injection (EFI) system guarantees immediate throttle response and outstanding thermal efficiency, eliminating the maintenance struggles of traditional carburetors. Manufactured in the USA, this highly corrosion-resistant outboard incorporates a 2.00:1 gear ratio to translate the 3-cylinder torque curve into steady hull planing and smooth cruising in choppy coastal harbors.
Technical Specifications of Mercury 40ELH
| Engine type | Inline 3-Cylinder SOHC |
|---|---|
| Displacement | 747 cc (45.6 cu in) |
| Horsepower | 40hp @ 5750 RPM |
| Full-throttle rpm range | 5500 – 6000 RPM |
| Fuel induction | Electronic Fuel Injection (EFI) |
| Alternator output | 18 Amp (226 Watt) |
| Gear ratio | 2.00:1 |
| Shaft length | 20 inch |
| Dry weight | 204 lbs (93 kg) |
| Steering | Tiller Control |
Inline 3-Cylinder 747cc Efficiency
The 747cc 3-cylinder platform maximizes fuel efficiency while maintaining a lightweight footprint that is ideal for weight-sensitive aluminum vessels. This design provides the smooth, reliable low-end torque required for pushing heavily loaded skiffs through harbor currents without the bulk of a larger 4-cylinder engine block, making it a favorite for American inland lake fishing.
EFI Induction Precision
Mercury’s advanced EFI system continuously monitors atmospheric variables to deliver the perfect air-fuel ratio. This guarantees instant, zero-choke starting and prevents engine bogging during rapid acceleration scenarios, completely eliminating carburetor-related maintenance issues common in mid-range outboards.
Tiller Maneuverability
The ergonomic tiller handle provides direct steering control and precise throttle adjustments, allowing for effortless maneuverability in tight marinas and hazardous river channels. This setup significantly reduces captain fatigue during long days of coastal navigation, offering a more connected experience between the operator and the water.
Mercury 3-Year Protection
Every Mercury 40HP FourStroke outboard is backed by a comprehensive 3-Year Limited Warranty for American owners. This factory-level protection ensures long-term peace of mind and grants access to genuine parts through a vast nationwide marine dealer service network.
Maintenance & Longevity
Maintaining clean oil in the 3.0L wet sump lubrication system is vital for preserving the engine’s tight mechanical tolerances. Always flush the cooling system with fresh water after every saltwater outing. Pro Tip from the Shop: Periodically lubricate the tiller pivot joints and shift linkages with marine grease, and protect the high-pressure EFI fuel injectors by always using a high-quality marine-grade fuel stabilizer during off-season storage.
Mercury 40ELH Outboard Motor Specs
| Brand | Mercury Marine |
| Country of Origin | Japan |
| Warranty Policy | 3 Years |
| Engine Architecture | Inline 3-Cylinder SOHC – Specialized high-displacement mid-range three-cylinder motor block providing exceptional low-vibration performance and smooth low-speed trolling. |
| Displacement & Power | 747 cc – Generates an elite 40 horsepower at 5750 RPM utilizing an expanded 3.2-quart automotive-style wet-sump forced oil lubrication tracking system. |
| Fuel Induction System | Electronic Fuel Injection – Highly refined digital fuel induction managed by an advanced ECM 70 system to optimize instant acceleration responses. |
| Electrical & Charging | 18 Amp Alternator – Upgraded high-output charging stator outputting 226 watts to handle multiple livewell pumps and dual depth finder screens. |
| Shaft & Transom Layout | 20-inch Long Shaft – Deep-water drive unit profile seating the propeller and cooling water pick-up rails completely clear of choppy aeration streams. |
| Control Mechanism | Electric Tiller Setup – Center-mounted multi-function tiller framework providing handle-integrated key starting loops paired with an ergonomic gas-assist tilt assembly. |
| Dry Weight Profile | 204 lbs – Balanced 93 kg propulsion platform matching large-displacement heavy-duty tracking with simplified manual control brackets. |
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