Yamaha 40HP F40LA – EFI 4-Stroke 20in Shaft
Yamaha 40HP F40LA is an EFI 4-stroke 20in shaft device engineered for high-performance marine energy, utilizing advanced fuel injection and a long-shaft design to deliver exceptional mid-range torque and durability for boaters.
- Model: F40LA EFI FourStroke.
- Engineering: 747cc 3-Cylinder SOHC engine.
- Performance: Electronic Fuel Injection with 20-inch shaft.
- Output: 17 Amp high-output charging alternator.
- Warranty: Yamaha 3-Year limited factory warranty.
Description
Yamaha 40HP F40LA EFI 4-Stroke 20in Shaft
The Yamaha 40HP F40LA is a versatile 747cc three-cylinder outboard featuring a 20-inch shaft, engineered for maximum reliability in the mid-range portable class. Utilizing a Single Overhead Camshaft (SOHC) design, this model delivers consistent torque density and a refined mechanical soul for light-duty utility vessels and small pontoons. The integration of Multi-Point Electronic Fuel Injection (EFI) ensures a clean-burning profile and precise throttle response, while the engine’s structural integrity is protected by Yamaha’s proprietary multi-layered anti-corrosion system and high-strength marine alloys.
Achieving peak operational value, the F40LA is tuned to deliver smooth idling and reduced vibration, making it an ideal choice for technical backwater navigation and relaxed recreational cruising. Maintenance is made effortless by the front-mounted freshwater flush port and easy-access service points for routine checks. This model is compatible with Yamaha’s Multi-Function Tiller Handle or traditional mechanical remote controls, offering flexibility for various boat configurations. This unit includes a reliable 17-amp alternator, ensuring stable energy delivery for navigational electronics and basic shipboard accessory loads.
Key Features of Yamaha F40LA
- 747cc 3-Cylinder SOHC 6-Valve.
- 40 Horsepower Prop Shaft Rating.
- 20-Inch Shaft 214 lbs Weight.
- Electronic Fuel Injection (EFI) System.
- Mechanical Remote or Tiller Compatibility.
- 17 Amp Total Output Alternator.
- 2.00:1 Ratio Standard Gearcase.
Yamaha F40LA Specs
| Brand | Yamaha |
| Full Model Code | F40LA |
| Country of Origin | Japan/Thailand |
| Engine Family/Series | Mid-Range EFI High Feature |
| Engine Type | Inline-3, SOHC, 4-Stroke |
| Displacement | 747 cc |
| Horsepower | 40 HP |
| Full Throttle RPM Range | 5000-6000 |
| Fuel Induction System | EFI |
| Alternator Output | 17 Amps |
| Gear Ratio | 2.00:1 |
| Shaft Length | L: 20in |
| Dry Weight | 98 kg (216 lbs) |
| Bore x Stroke | 65.0x75.0mm |
| Starting & Steering System | Electric Start / Remote Steering |
| Trim/Tilt Method | Power Trim & Tilt |
| Oil Capacity | 1.7L |
| Recommended Fuel | 87 Octane |
| Standard Warranty | 3-Year |
| Application | Modern aluminum and fiberglass boats requiring full power trim control (20in). |
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