Mercury 40HP 40EPT EFI Outboard Motor – 15″ Shaft, Remote, Electric Start/Power Tilt
The Mercury 40EPT EFI is a 40HP inline-three four-stroke outboard motor featuring a 15-inch short shaft, power tilt, and remote mechanical steering interfaces.
- Engine type: Four-stroke I3 747cc displacement block.
- Fuel system: EFI for smooth, smoke-free operation.
- Shaft length: 15 inch short shaft size.
- Features: Power Tilt facilitates shallow water navigation.
- Control: Remote mechanical cable control system.
Description
Mercury 40EPT EFI 40HP Outboard Motor
To address the requirement for efficient fuel management and precise hull leveling on short-transom vessels, the Mercury 40HP 40EPT EFI Outboard utilizes a high-efficiency 3-cylinder 4-stroke architecture. This engineering configuration features a remote mechanical interface and an integrated power trim system designed for 15-inch transom applications. By optimizing the air-to-fuel ratio through precision Electronic Fuel Injection, the platform ensures rapid hull planning and consistent performance across a wide variety of sea states. The streamlined gearcase is engineered to minimize hydrodynamic drag, ensuring available energy translates into efficient forward movement for professional maritime operators.
Maintaining peak operational efficiency while meeting EPA Tier 3 standards confirms that the Mercury 40HP 40EPT EFI delivers the marine propulsion platform reliability required for recreational and light commercial service. Protection against internal saltwater corrosion is secured through the use of low-copper aluminum alloys and sacrificial anodes combined with a robust freshwater flushing system. The integrated 18-amp alternator maintains battery health for critical onboard electronics and navigational suites during daily transit cycles. This robust mechanical framework ensures thermal stability and structural reliability even when the engine is subjected to continuous high-load propulsion cycles in demanding coastal environments.
Key Features of Mercury 40HP 40EPT EFI
- 40HP EFI delivers smooth and efficient 4-stroke performance
- Electronic Fuel Injection optimizes fuel atomization
- 204 lbs chassis provides class-leading agility
- 15 inch shaft clears short-transom hulls
- Power Trim and Tilt allows for precise hull adjustment
- Electric start ensures instantaneous ignition
- 3 year warranty includes nationwide service network
Mercury 40HP 40EPT EFI Specs
| Brand | Mercury Marine |
| Full Model Code | 40EPT |
| Country of Origin | USA / Japan Componentry |
| Engine Family/Series | FourStroke Midrange |
| Engine Type | Inline 3 / SOHC / 4-Stroke |
| Displacement | 0.75 Liters (747 cc) |
| Horsepower | 40 HP @ 5500 RPM |
| Full Throttle RPM Range | 5500 - 6000 RPM |
| Fuel Induction System | Electronic Fuel Injection (EFI) |
| Alternator Output | 18 Amps |
| Gear Ratio | 2.00:1 |
| Shaft Length | 15" (Short) |
| Dry Weight | 93 kg (204 lbs) |
| Bore x Stroke | 65 x 75 mm |
| Starting & Steering System | Electric w/ Remote Mechanical Control |
| Trim/Tilt Method | Power Trim & Tilt |
| Oil Capacity | 3.0L |
| Recommended Fuel | 87 Octane |
| Standard Warranty | 3-Year Limited Pleasure |
| Application | Reliable, compact short-shaft power for small fiberglass and aluminum hulls. |
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