This model Represents a typical air cooled, side-valve, four stroke petrol engine with the operation of the valves clearly evident . Cam operated inlet and exhaust valves being driven by a gear train from rear of the main crank. As with the two-stroke model, spark plug simulated through a small lamp to indicate the firing point. A pair of 4mm socket terminal for electrical supply. Cross-section of carburetor is shown. Mounted on a powder coated metal base with printed diagram. |
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