Mariner 9.9hp International (Yamaha-built 682) vs Parsun F9.8 (4-Stroke)

Mariner

9.9hp International (Yamaha-built 682)

1990 · 9.9 HP · 2-Stroke
VS
Parsun

F9.8 (4-Stroke)

2024 · 9.8 HP · 4-Stroke
Spec Mariner 9.9hp International (Yamaha-built 682) Parsun F9.8 (4-Stroke)
Power & Performance
Horsepower 9.9 HP 9.8 HP
Displacement 246 cc ← 209 cc
Configuration 2 Cyl / Inline 2 Cyl / Inline
Weights & Dimensions
Dry Weight 34 kg (75 lbs) ← 38 kg (84 lbs)
Mechanical & Electrical
Gear Ratio 2.08 2.08
Alternator 80 W 84 W ←
Fuel Delivery Carbureted Carbureted
Maintenance
Spark Plug NGK B7HS NGK DCPR6E
Engine Oil TC-W3 2-Stroke Parsun 4-Stroke Oil

Technical Comparison Analysis

Power & Displacement

Comparing the Mariner 9.9hp International (Yamaha-built 682) and Parsun F9.8 (4-Stroke) shows a displacement difference of 37cc. The Mariner features a larger 246cc 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 Mariner is the lighter option at 34kg, offering a weight saving of 4kg 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 Parsun offers the best charging performance with a 84W alternator. Choosing the right power-to-weight profile between these two 2-stroke engines depends heavily on your specific boat's displacement and daily power requirements.