Shows a typical air-cooled, side-valve, four-stroke petrol engine with the operation of the valves clearly visible, the cams being driven by a gear train from the back of the main crank. As with the two-stroke model, a simulated spark plug uses a small lamp to show the firing point. Screw terminals are provided for connection to a 3 V battery. A cross-section of the carburettor is shown. Mounted on a base.

We are manufacturers and suppliers of the 4-Stroke Petrol Engine model, serving Algeria, Argentina, Australia, Bahrain, Bangladesh, Belgium, Bhutan, Brazil, Cambodia, Cuba, Cyprus, Denmark, Ecuador, Egypt, Ethiopia, Finland, France, Georgia, Germany, Ghana, Hungary, Iceland, Italy, Japan, Jordan, Kenya, Kuwait, Malaysia, the Philippines, Tanzania and Uganda.