Two Stroke · Portable
Tohatsu M9.8B
Understanding this Tohatsu model
Tohatsu M9.8B is a compact two-stroke outboard where low weight, simple mechanics and portability are priorities. It sits in the Two Stroke series and VerFinder classifies it as Portable. Verified official specifications include 9.8 ps (7.2 kw), 169 cc (10.31 cu.in.), Two Stroke 2 Cylinder. VerFinder separates manufacturer facts from selection context and keeps the complete specification table below for checking the exact configuration.
Key verified facts
- Output
- 9.8 ps (7.2 kw)
- Displacement
- 169 cc (10.31 cu.in.)
- Engine
- Two Stroke 2 Cylinder
- Weight
- 26.0 Kg (57 lbs.)
- RPM range
- 5,000 - 6,000
- Starting
- Electric or Manual
- Control
- Tiller Handle
- Gear ratio
- 2.08:1 (13:27)
- Fuel
- Unleaded Gasoline (87 Octane)
Where it fits in the Tohatsu range
Within the Two Stroke series, VerFinder places Tohatsu M9.8B beside the nearest published Tohatsu models shown below. This is a catalogue position, not a performance ranking: final selection depends on hull, load and exact configuration.
Technologies and characteristics
Official technology and feature names shown by Tohatsu for this model:
- Tohatsu 2-stroke benefits
- Easy operation and handling
- Fundamentals for user convenience and reliability
- Protection
Technical specifications
- Engine
- Two Stroke 2 Cylinder
- Output
- 9.8 ps (7.2 kw)
- Displacement
- 169 cc (10.31 cu.in.)
- Bore x Stroke
- 50 x 43 mm (1.97 x 1.69 in)
- Max. RPM Range
- 5,000 - 6,000
- Starting
- Electric or Manual
- Control Type
- Tiller Handle
- Gear Shift
- Forward - Neutral - Reverse
- Gear Ratio
- 2.08:1 (13:27)
- Ignition System
- ATDC1゜- BTDC17゜
- Propeller Selection Range
- 5" - 9.5"
- Transom Height
- 15", 20", 25"
- Fuel
- Unleaded Gasoline (87 Octane)
- Oil Type
- Genuine recommended 2stroke engine oil (TCW-3)
- Fuel Tank
- 12 L (3.17 US Gal.) Separate Fuel Tank
- Weight*
- 26.0 Kg (57 lbs.)
- Alternator Output
- Optional: 12V, 80W, 7A (Standard on Electric Start Models)
- Start In Gear Protection
- Standard
- Thermostat Controlled Cooling System
- Standard
- Through-The-Prop Exhaust
- Standard
- Shallow Water Drive
- Standard
- Engine lubrication system
- Premixed Fuel
Before choosing a configuration
Check the boat manufacturer’s permitted horsepower and transom specification, shaft length, steering/control type, starting system, trim/tilt equipment, propeller choice and the installed weight of the exact configuration.
Frequently asked questions
What type of outboard is Tohatsu M9.8B?
Tohatsu M9.8B is a Tohatsu Two Stroke-series outboard. VerFinder classifies it in the Gasoline section and the Portable class.
What is the rated output of Tohatsu M9.8B?
The official Tohatsu specification lists the output as 9.8 ps (7.2 kw).
What are the key technical specifications of Tohatsu M9.8B?
The complete verified specification table is shown on this page. Key values include 9.8 ps (7.2 kw), 169 cc (10.31 cu.in.), Two Stroke 2 Cylinder, 26.0 Kg (57 lbs.).
What should be checked before installing Tohatsu M9.8B?
Before installation, verify permitted horsepower, transom and shaft length, controls, starting, trim/tilt, propeller selection and installed weight for the exact version.
Verified official source
Sources and verification
Source checked: 2026-09-02