3. INSPECTION/ADJUSTMENT ATV 50 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-BR8HAS Gap, Wear, and Fouling Deposits Measure the spark plug gap. Spark Plug Gap: 0.60.7 mm (0.024 0.028) When installing, first screw in the spark plug by hand and then tighten it with a spark plug wrench. Washer Deformation Cracks, Damage Clip LUBRICATION SYSTEM Oil Filter Cleaning Disconnect the oil tube at the oil pump side and allow oil to drain into a clean container. Remove the tube clip at the oil tank side and disconnect the oil tube. Remove the oil filter. Oil Filter 3-5