The four stroke gas engine is classically constructed with a bottom-mounted camshaft powered by gearwheels which operate valves via a ram, push rod and rocker arm.
A large flywheel with a flange-mounted ripcord-wheel facilitates comfortable and secure starting.
The gasification, i.e. the blending of gas and air, is achieved via a user-controlled carburettor. The desired rotation speed is adjusted via a lever.
This reduced emission engine with a piezo high voltage ignition is very quiet and even at high rotation speeds produces a pleasant sound.
The engine consumes fuel economically and thanks to the open construction design displays a very satisfactory sequence of piston, crosshead, push rods and rocker arms in motion .Click on picture for large view.