What is the correct spark plug for 10 hp Tecumseh?

The correct spark plug for a 10 hp Tecumseh engine is typically the Tecumseh part number 59065 or an equivalent, such as the Champion H80C or the NGK BPR6ES. However, it's always best to consult the engine's manual or the manufacturer's specifications for precise recommendations, as variations may exist based on the engine model and production year. Ensure to check the gap specification and adjust if necessary for optimal performance.