This document provides vital safety instructions and warnings for the operation of O.S. Engines 65VR-DF and 91VR-DF model aircraft engines. It emphasizes the importance of reading the manual before operation to understand controls and features, and warns that the engine is a powerful internal-combustion machine, not a toy.
The text details specific hazards associated with model engine fuel, which is poisonous and highly flammable, and the dangers of carbon monoxide exhaust. It includes critical warnings regarding propeller safety, such as ensuring the propeller is securely mounted and not touching rotating parts, and advises against operating the engine in enclosed spaces.
The text states that propeller tip speeds with powerful engines may exceed 600 feet per second.
You must keep all onlookers well back at least 20 feet or 6 metres.
You must use an electric starter to operate the engine.