3. INSPECTION/ADJUSTMENT ATV 150/125 Clean air filter element steps: Tap the element lightly to remove most of the dust and dirt. Blow out the remaining dirt with compressed air. Install the air filter element and air filter case. Install the front cover. SPARK PLUG Remove the spark plug. Check the spark plug for wear and fouling deposits. Clean any fouling deposits with a spark plug cleaner or a wire brush. Specified Spark Plug: NGK: CR8E Measure the spark plug gap. Gap, Wear, and Fouling Deposits Spark Plug Gap: 0.60.7 mm (0.00240.0028 in) When installing, first screw in the spark plug by hand and then tighten it with a spark plug wrench. Washer Deformation Cracks, Damage 3-5