What should the spark plug gap be set to and will the spark plug be working at all times, or only when starting the machine?
A. The ideal gap on the spark plug of the machine should be .060″ (1.5 mm). This is a wider gap than what is used on conventional piston type engines and is necessary to enable a “HOTTER SPARK” for quick starting. The spark plug is only used to start the engine. After starting the engine, the heat from the engine is used to ignite the gasoline/air mixture causing the explosions necessary to maintain the combustion cycle.