Johnson 3.5hp (4-Stroke) vs Tohatsu MFS3.5 (4-Stroke)
3.5hp (4-Stroke)
MFS3.5 (4-Stroke)
| Spec | Johnson 3.5hp (4-Stroke) | Tohatsu MFS3.5 (4-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 3.5 HP | 3.5 HP |
| Displacement | 85 cc | 85 cc |
| Configuration | 1 Cyl / Inline | 1 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 18 kg (40 lbs) ← | 18.4 kg (41 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 1.85 | 2.15:1 |
| Alternator | 0 W | 0 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | NGK CPR6EA-9 | NGK DCPR6E |
| Engine Oil | 10W-30 Marine | 10W-30 FC-W |
Technical Comparison Analysis
Power & Displacement
Comparing the Johnson 3.5hp (4-Stroke) and Tohatsu MFS3.5 (4-Stroke) shows a displacement difference of 0cc. The Tohatsu features a larger 85cc block, which typically provides superior low-end torque and better hole-shot performance when pushing heavy loads or reaching planning speeds.
Weight & Rigging
In terms of transom weight, the Johnson is the lighter option at 18kg, offering a weight saving of 0.3999999999999986kg over its competitor. This weight reduction is critical for smaller hulls or boats with limited transom capacity where every kilogram affects the center of gravity and drainage efficiency.
Electrical & Features
For boats equipped with modern electronics, sonar, and shallow-water anchors, the Tohatsu offers the best charging performance with a 0W alternator. Choosing the right power-to-weight profile between these two 4-stroke engines depends heavily on your specific boat's displacement and daily power requirements.