531 Engines · 22 Brands · 1955–2024
McCulloch

7.5hp Scott-Built

1964 · 7.5 HP · 2-Stroke
VS
Mercury

7.5hp (Blue Stripe)

1978 · 7.5 HP · 2-Stroke
Feature McCulloch 7.5hp Scott-Built Mercury 7.5hp (Blue Stripe)
Power & Performance
Horsepower 7.5 HP 7.5 HP
Displacement 164 cc 180 cc ←
Configuration 2 Cyl / 2 Cyl / Inline
Weights & Dimensions
Dry Weight 26 kg (57 lbs) ← 29 kg (64 lbs)
Mechanical & Electrical
Gear Ratio 2.00:1
Alternator W 0 W
Fuel Delivery Carbureted Carbureted
Maintenance
Spark Plug
Engine Oil 50:1 Pre-mix