2. INSPECTION/ADJUSTMENT NEXXON 50 AIR CLEANER AIR CLEANER REPLACEMENT Remove the skirt L/R side up center cover. Remove the air cleaner. Remove the air cleaner case cover screws and the cover. Remove the air cleaner screen and element. Check the element and replace it with a new one if it is excessively dirty or damaged. Screw CHANGE INTERVAL Wash the air cleaner element in detergent oil, squeeze out and allow to dry. Never use gasoline or organic vaporable oil with acid or alkali for washing. After washing, soak the element in clean Wash Squeeze out engine oil SAE 15W-40# and squeeze out Engine Squeeze out and dry oil and dry excess oil. Reinstall the element. SPARK PLUG Remove the spark plug. Check the spark plug for wear, damage and fouling deposits. Clean any fouling deposits with a spark plug cleaner or a wire brush. Specified Spark Plug: CR7HSA/PZ9HC Spark Plug Gap, Wear, and Fouling Deposits Measure the spark plug gap. Spark Plug Gap: 0.60.8mm 0.60.8mm When installing, first screw in the spark plug by hand and then tighten it with a spark plug wrench. Cracks Washer Damage Deformation 2-4