Spark Plug Recommendations
It’s very important to use the correct spark plug for your machine. A spark plug with a heat range too high will cause engine damage. A spark plug with a heat range too low will cause excessive fouling and engine malfunctioning. Change the spark plugs every 2000-2500 miles (3200-4000 km)
A new engine can cause temporary spark plug fouling due to the preservative added during the assembly process. Avoid prolonged idle speeds, which cause plug fouling and carbonization.
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Use recommended spark plugs with the proper gap.
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Use only resistor-type spark plugs.
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Torque spark plugs to specification.
TORQUESpark Plug
18-22 ft-lbs (24-30 N·m)
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Always carry spare spark plugs.