Manufacturer Part Number (MPN)
MFS4DDL
Marine Engineer Insight: The Tohatsu MFS4DDL (MPN MFS4DDL) is the definitive auxiliary power choice for small sailboats and high-transom skiffs. Re-engineered for unparalleled portability, this 20" long shaft model features a unique 3-way storage system, allowing it to be laid on its front, left, or right side without risk of oil leakage. With a focus on ergonomic operation and smooth fuel-efficient power, the MFS4D series provides professional-grade reliability in a compact, one-cylinder package.
The Benchmark for Long-Shaft Portability
The Tohatsu MFS4DDL (MPN: MFS4DDL) is a 1-cylinder, 4-stroke engine that delivers the quiet, smoke-free performance that modern boaters demand. This long shaft (20") version is specifically designed for vessels that require deeper propeller immersion, such as sailboats or larger tenders with high transoms. The 1.15-liter integrated fuel tank provides a clean, self-contained setup, while the built-in external connector offers the versatility to run from a larger separate tank for longer trips.
Ease of use is at the core of the MFS4DDL design. It features a front-mounted shift lever—an industry-leading innovation that makes shifting between Forward, Neutral, and Reverse significantly more intuitive than traditional side-mount levers. With large carrying handles and a vibration-dampened tiller handle, this motor is as easy to transport on land as it is to operate on the water.
Technical Specifications
| Official MPN |
MFS4DDL |
| Engine Type |
1-Cylinder 4-Stroke |
| Shaft Length |
20" (Long Shaft) |
| Starting System |
Manual Recoil |
| Fuel Tank |
1.15L Integrated (External Tank Connector Built-in) |
| Dry Weight |
Approx. 57 lbs (26 kg) |
| Control Type |
Tiller Steering |
MFS4DDL Key Performance Features:
- 3-Way Storage: Advanced sealing allows the motor to be stored on three sides without oil leaking into the combustion chamber.
- Front-Mounted Shifting: Conveniently placed lever allows for quick, safe gear changes at the dock.
- Large Carrying Handles: Ergonomically shaped handles on both the front and rear make mounting the motor a one-person job.
- Shallow Water Drive: Features multiple tilt positions to navigate safely through rocky or thin water.
- Vibration Dampening: High-quality rubber mounts isolate the tiller handle from engine harmonics for better operator comfort.
Frequently Asked Questions
1. Is this motor suitable for a sailboat?
Yes, the 20" long shaft is specifically intended for sailboats and other vessels with high transoms to ensure the propeller remains submerged during swells.
2. Do I need to mix oil with the gasoline?
No, this is a 4-stroke engine. It uses straight unleaded gasoline and has a separate internal oil reservoir, just like a car engine.
Tohatsu Authorized Dealer | Verified 4hp Long Shaft Data | MPN: MFS4DDL
