If the engine does not start, it may depend on different components as in the spark plugs, battery or the starter motor (if it is an electric starter) ignition, carburetor, reed valves…Fortunately, these are all easily verifiable parts, except one, the carburetor diaphragm. In order to check whether the engine issue is caused by the incorrect opening and closing pressure of the carburetor diaphragm, a control pump is required. A useful accessory to check the functionality and parameters of the carburetor and thus determining whether the problem lies in the engine power supply phase or something else.

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