
Tohatsu 3.5HP 4-Stroke Outboard Engine Short Shaft
The 3.5 hp is lightweight and has a four point vibration absorption system to minimize vibration. And with sensational fuel economy, this compact little 3.5hp engine has it all… making it one of the best choices available for portable outboard power.
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The 3.5 hp is lightweight and has a four point vibration absorption system to minimize vibration. And with sensational fuel economy, this compact little 3.5hp engine has it all… making it one of the best choices available for portable outboard power.
The 3.5 hp is lightweight and has a four point vibration absorption system to minimize vibration. And with sensational fuel economy, this compact little 3.5hp engine has it all… making it one of the best choices available for portable outboard power.
Description
The Tohatsu 3.5HP Short Shaft 4-Stroke Outboard provides reliable and efficient power in a compact, easy-to-handle design. Its 79cc single-cylinder OHV engine ensures quiet, smooth operation, while the carbureted fuel system delivers consistent, simple, and fuel-efficient performance.
With a 15” (381 mm) short shaft, this engine is ideal for boats with shallow transoms, providing proper propeller immersion, stable handling, and efficient thrust. Features include manual start, tiller steering compatibility, and optional power trim, making operation versatile for small craft applications.
Constructed for long-lasting durability, the Tohatsu 3.5HP includes stainless steel fasteners, corrosion-resistant components, and a reliable water-cooling system, suitable for both freshwater and saltwater environments. Its compact and lightweight design allows for easy transport, mounting, and storage.
Specifications
| Engine | 4 Stroke 1 Cylinder |
|---|---|
| Output | 3.5 hp (2.6 kw) |
| Displacement | 85.5 cc (5.2 cu.in.) |
| Bore x Stroke | 55 x 36 mm (2.17 x 1.42 in) |
| Max. RPM Range | 5,000 - 6,000 |
| Starting | Manual |
| Control Type | Tiller Handle |
| Gear Shift | Forward - Neutral |
| Gear Ratio | 2.15:1 (13:28) |
| Propeller Selection Range | 4.5" - 7" |
| Transom Height | 15", 20" |
| Fuel | Unleaded Gasoline (87 Octane) |
| Oil Type | NMMA Certified FC-W® 4-stroke oil** SAE 10W-30/40 (SF, SG, SH, SJ) |
| Oil Capacity | 300 mL (10 fl. oz.) |
| Fuel Tank | 1L (0.26 US Gal.) Integral Tank |
| Weight* | 18.4 kg (41 lbs.) |
| Digital CD Ignition System | Standard |
| Thermostat Controlled Cooling System | Standard |
| Shallow Water Drive | Standard |
UK Mainland: 2-3 working days
Scottish Highlands: 3-5 working days
International: 5-10 working days








