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Tohatsu MFS9.9EEPL 9.9HP – EFI Electric Start Remote 20-Inch Shaft
Tohatsu MFS9.9EEPL – 9.9HP features a high-performance four-stroke propulsion system designed for remote operation on 20-inch transom vessels. The electric start and EFI technology offer turn-key reliability for console-steered inflatables and small aluminum crafts, ensuring a smoke-free experience and industry-leading fuel efficiency during long-range coastal travel.
- Precision Shaft Geometry Data: 20-inch long shaft geometry.
- Internal Engine Configuration Type: Inline 2-Cylinder SOHC 333cc.
- Advanced Fuel Delivery System: Sequential Multi-Port Electronic Fuel Injection.
- Recommended Vessel Application Use: Ideal for console-steered tenders and aluminum fishing boats.
- Factory Protection Service Plan: 5-year limited factory warranty coverage.
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Description
Tohatsu MFS9.9EEPL 9.9HP EFI Electric Start Remote
The Tohatsu MFS9.9EEPL is a high-authority 9.9HP outboard engineered for elite convenience and mechanical precision on console-steered vessels in the North American maritime market. Built on a robust 333cc inline 2-cylinder SOHC architecture and weighing 114 lbs, this unit features a specialized Electric Start Remote Control configuration. This 20-inch long shaft model is a premier match for small center consoles and aluminum skiffs requiring advanced marine propulsion units with aggressive low-end torque and the tactical authority needed for effortless helm handling.
Peak operational performance is achieved between 5400 and 6100 RPM, delivering immediate throttle response at the remote control. The specialized 2.15:1 gear ratio facilitates the mechanical translation of the 333cc torque curve into rapid hole-shot capability and steady hull planing. This engine exemplifies Japanese engineering excellence, ensuring the corrosion-resistant block maintains high thermal efficiency while providing the refined, vibration-free experience that serious recreational boaters expect from an EFI unit across the United States.
Technical Specifications of Tohatsu MFS9.9EEPL
- The 333cc inline 2-cylinder SOHC powerhead provides superior displacement and smoother torque delivery compared to traditional designs.
- Remote Mechanical Controls provide a dependable, tactical connection between the helm and the propulsion unit for absolute boat control.
- Electric Start configuration offers push-button ignition convenience with a dedicated control box for console mounting.
- Electronic Fuel Injection (EFI) ensures reliable zero-choke starting and exceptional thermal efficiency in all maritime weather conditions.
- A robust 12V 12A alternator (145W) delivers essential charging power to support modern navigation displays and safety electronics.
- The 20-inch long shaft ensures optimal propeller depth for high-transom fiberglass skiffs and console-mounted utility boats.
Big-Block Remote Authority
The FourStroke 9.9HP EFI technology leverages its 333cc big-block architecture to maximize thrust across the power band. This sophisticated design ensures the engine works efficiently at cruising speeds, providing the vibration dampening and mechanical strength required for pushing small hulls through tidal flows while maintaining reliable marine motor systems standards for professional navigation.
Precision EFI Induction
The Electronic Fuel Injection system monitors atmospheric variables to provide the perfect fuel induction ratio for peak performance. This advanced technology guarantees instant starting and prevents engine bogging, completely eliminating carburetor-related maintenance while providing rapid acceleration and clean combustion for long-range trips in performance-driven coastal saltwater maritime environments.
Tohatsu 5-Year Warranty
Every Tohatsu MFS9.9E is backed by a comprehensive 5-Year Limited Warranty for American boat owners. This industry-leading protection covers structural and mechanical defects, ensuring access to genuine replacement parts and certified technicians through a vast nationwide dealer network, reflecting a deep commitment to long-term maritime reliability.
Maintenance & Longevity
Maintaining clean oil in the 1.0-liter wet sump system is essential for preserving the engine’s tight mechanical tolerances in saltwater. Freshwater flushing after every excursion prevents internal salt deposits and maintains cooling system health. Pro Tip from the Shop: Periodically check the remote control cables for smooth operation and grease the steering linkage to maintain responsive vessel handling during complex harbor maneuvers.
TOHATSU MFS9.9EEPL Full Specs
| Engine type | Inline 2-Cylinder SOHC |
| Displacement | 333 cc (20.3 cu in) |
| Bore x stroke | 61 x 57 mm (2.40 x 2.24 in) |
| Horsepower | 9.9hp @ 5500 RPM |
| Full-throttle rpm range | 5400 - 6100 RPM |
| Compression ratio | N/A |
| Fuel induction | Electronic Fuel Injection (EFI) |
| Recommended fuel | 87 Octane |
| Ignition | Digital CD Ignition |
| Alternator output | 12V 145W 12A |
| Gear ratio | 2.15:1 |
| Gear shift | Forward, Neutral, Reverse |
| Shaft length | 20 inch |
| Dry weight | 114 lbs (51.5 kg) |
| Controls | Electric Start Remote Control |
| Steering | Remote |
| Trim and tilt | Manual (6 positions) |
| Exhaust | Through Propeller |
| Cooling system | Water Cooled w/ Thermostat |
| Lubrication | Trochoid Pump |
| Oil capacity | 1.1 Quarts (1.0 Liter) |
| Emissions rating | EPA 2010 / C.A.R.B. 3-Star |
Tohatsu MFS9.9EEPL 9.9HP - Tohatsu Marine Parts & Remote Guide
The 20-inch shaft and remote controls make this model the optimal boat hull application for high-transom pontoons. The EFI motor provides a smooth gallons per hour rate, ensuring you have enough power for cruising without the vibration and noise of traditional two-stroke outboard engines.
Keep the FC-W engine oil capacity within the recommended range to ensure the EFI fuel system and moving parts are well-lubricated. Regularly replacing Tohatsu Marine Parts such as spark plugs and filters will help maintain the engine's reliability and fuel-efficient performance over many seasons.
Ensure your electrical system is supported by a battery with high minimum marine cranking amps to power the starter motor. Reliable power prevents common Tohatsu MFS9.9EEPL Troubleshooting problems, such as a lack of response from the remote ignition switch during cold starts.
Identify all sacrificial aluminum anode locations, typically found on the bracket and lower unit, to protect against saltwater corrosion. Because the long shaft has more surface area exposed, replacing these Tohatsu Marine Parts regularly is essential for preventing structural piting and paint degradation.
Despite its power, this 9.9HP engine maintains a very competitive gallons per hour rate. It is designed to maximize every drop of fuel through its EFI technology, making it the optimal boat hull application for budget-conscious boaters who don't want to sacrifice performance.
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