Wolseley Stationary Engines – Style 4 Engine Specification 
Governor: Throttle (Internal centrifugal acting on the carburettor butterfly)
Fuel: Petrol & Paraffin (Paraffin is also known as paraffin oil and kerosene)
Ignition: Two Versions - Rotary BT-H KA1 and Bosch FF1A (anticlockwise) HT Magneto
Spark Plug: OEM Unknown: Substitutes - Champion D16, NGK AB6, Bosch M8A
Carburettor: Wolseley Design
Cooling: Tank and Screen
Operating RPM: 2.5 HP - 600 rpm, 4 HP - 500 rpm, 6 HP - 400 rpm (Paraffin Versions 4 HP - 550 rpm and 6 HP - 450 rpm
OEM Colour: Olive Green
Engine Notes: