Parsun F4 (4-Stroke) vs Yamaha F4 Portable
F4 (4-Stroke)
F4 Portable
| Spec | Parsun F4 (4-Stroke) | Yamaha F4 Portable |
|---|---|---|
| Power & Performance | ||
| Horsepower | 4 HP | 4 HP |
| Displacement | 112 cc | 139 cc ← |
| Configuration | 1 Cyl / Inline | 1 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 24.5 kg (54 lbs) ← | 27 kg (60 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 2.08 | 2.08:1 |
| Alternator | 0 W | 0 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | NGK DCPR6E | NGK CR6HSB |
| Engine Oil | 10W-30 FC-W | Yamalube 4-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the Parsun F4 (4-Stroke) and Yamaha F4 Portable shows a displacement difference of 27cc. The Yamaha features a larger 139cc 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 Parsun is the lighter option at 24.5kg, offering a weight saving of 2.5kg 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 Yamaha 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.