Manufacturer Part Number (MPN)
MFS20ES
Marine Specialist Insight: The Tohatsu MFS20ES (MPN MFS20ES) is widely considered the lightest 20 HP EFI outboard in its class. Featuring a 15-inch short shaft and Tohatsu’s revolutionary Battery-Less Electronic Fuel Injection (EFI), this motor offers high-torque performance without the weight of a battery. It is the definitive choice for aluminum fishing boats, small skiffs, and high-performance inflatables that require a portable engine with instant throttle response and one-pull reliability.
Lightweight Power with EFI Precision
The Tohatsu MFS20ES (MPN: MFS20ES) redefines portable four-stroke power. Built on a 333cc twin-cylinder platform, this engine utilizes a high-tech EFI system that doesn't require a battery to operate. This results in incredibly smooth idling, crisp acceleration, and superior fuel economy. By removing the carburetor, Tohatsu has eliminated the most common cause of small engine trouble, making the MFS20ES the most reliable 20 HP outboard on the market.
This model features a multi-function tiller handle that centralizes the gear shift, throttle control, and steering tensioner for ergonomic, one-handed operation. The optimized center of gravity makes tilting the engine effortless, while the through-propeller exhaust ensures a quiet and clean boating experience. Whether you are navigating inland lakes or coastal estuaries, the MFS20ES provides the perfect blend of performance and portability.
Technical Specifications
| Official MPN |
MFS20ES |
| Horsepower |
20 HP |
| Shaft Length |
15" (Short Shaft) |
| Starting System |
Manual Recoil Start |
| Fuel Delivery |
Battery-Less EFI |
| Weight |
Approx. 95 lbs (43 kg) |
| Full Throttle RPM |
5,400 - 6,100 RPM |
MFS20ES Key Performance Features:
- Battery-Less EFI: Experience the benefits of fuel injection—including fast starts and smooth idling—without the weight of a battery.
- Digital CD Ignition: Optimizes ignition timing for faster acceleration and consistent one-pull starting.
- Front-Mounted Shifting: Conveniently located gear lever for easy and intuitive maneuvering in tight spaces.
- Stainless Steel Housing: High-grade water pump housing ensures superior durability in both fresh and saltwater.
- Large Carry Handle: Ergonomically positioned to make transporting and mounting the engine as easy as possible.
Frequently Asked Questions
1. How does the EFI start without a battery?
The initial pull of the manual starter generates enough electricity to power the injectors and ECU instantly, allowing the motor to start with the same ease as a carbureted model.
2. Does it include a fuel tank?
Yes, the Tohatsu MFS20ES (MPN MFS20ES) comes standard with a 3.1-gallon (12L) external fuel tank, fuel hose, and a factory-matched aluminum propeller.
Tohatsu Outboard Specialist | Verified Marine Technical Data | MPN: MFS20ES
