31. Safety Precautions• This manual describes the engine. For its mounting and control, see theinstruction manual provided by model boat manufacturer.• This engine is designed for model boat use. If it is used for any otherpurpose, we cannot be responsible for its reliability, safety and anylaws/regulations in the country.• Use genuine parts for replacement.• Check the rotor and screw-propeller every time. If it is damaged, replace itwith a new one.• If the screw-propeller hit something while the engine is in operation,immediately stop the engine and check it.• Start the engine on a flat surface without pebble stones.• Never modify the rotor.• Check the rotor. If it is damaged, replace it with a new one.• When mixing the fuel, or operating the engine, carry it out in a well-ventilated place.• To prevent electrification, never touch the high-tension wire of the sparkplug during operation.• The engine metal parts can burn your skin. Never touch the engine andmuffler during operation or right after stopping the engine.