Manufacturer Part Number (MPN)
MFS9.8CS
Marine Engineer Insight: The Tohatsu MFS9.8CS (MPN MFS9.8CS) is a legendary outboard that continues to lead the industry as the lightest 9.8hp 4-stroke in its class. This 15" Short Shaft model is the ultimate choice for inflatable RIBs, small skiffs, and aluminum fishing boats. While competitors often struggle with weight in the 10hp bracket, Tohatsu utilizes a twin-cylinder SOHC design that provides smooth, vibration-free performance and superior low-end torque without the bulk.
The Gold Standard in Portable Twin-Cylinder Power
The Tohatsu MFS9.8CS (MPN: MFS9.8CS) is engineered for boaters who refuse to compromise between portability and power. For years, it has remained the preferred engine for those who need a motor light enough to carry but strong enough to get a boat on plane. The 2-cylinder architecture ensures a balanced firing order, resulting in a whisper-quiet idle and a smooth power curve that single-cylinder 8hp or 9.9hp models simply cannot replicate.
This manual start model is built for absolute reliability. It features Tohatsu's digital CD ignition for faster starting and smoother throttle response across all RPM ranges. The 15" short shaft is optimized for standard transoms, ensuring maximum thrust and agility. With a front-mounted shift lever and through-the-propeller hub exhaust, the MFS9.8CS provides an ergonomic and smoke-free experience for every passenger on board.
Technical Specifications
| Official MPN |
MFS9.8CS |
| Engine Type |
2-Cylinder 4-Stroke SOHC |
| Shaft Length |
15" (Short Shaft) |
| Starting System |
Manual Recoil |
| Displacement |
209 cc (12.8 cu. in.) |
| Dry Weight |
Approx. 81.5 lbs (37 kg) |
| Control Type |
Tiller Steering |
MFS9.8CS Key Performance Features:
- Lightest in Class: At just over 81 lbs, it is the easiest 9.8hp 4-stroke to mount and transport.
- Ultra-Smooth Operation: Twin-cylinder design eliminates the vibration common in large single-cylinder portables.
- Front-Mounted Shift Lever: Ergonomically placed for quick, intuitive gear selection (F-N-R).
- Water-Cooled Fuel System: Prevents vapor lock and ensures consistent performance in high temperatures.
- EPA/CARB 3-Star Rating: Environmentally friendly with industry-low ultra-low emissions.
Frequently Asked Questions
1. Does this outboard include a fuel tank?
Yes, the MFS9.8CS package includes a 3.1-gallon (12L) external fuel tank, fuel line, and a factory-fitted aluminum propeller.
2. Can I add a battery charging kit to this manual start motor?
Yes, an optional 12V 80W (6.7A) charging system can be installed to power your fish finder or run basic navigation lights.
Tohatsu Authorized Dealer | Verified 9.8hp 2-Cylinder Data | MPN: MFS9.8CS
