2003 Polaris Universal ATV Owners Manual - Page 120

MAINTENANCE AND LUBRICATION Filter Systems Air Filter Removal and Service - 2-Cycle Engines 1. 2. 3. 4. 5. 6. Remove the ATV seat. Release the clips securing the cover assembly to the air box. Loosen the clamp securing the filter, and remove the filter. Remove the foam pre-filter from the main filter. Wash the pre-filter in soapy water, then rinse and let dry. Re-install the pre-filter over the main filter. (Replace the main filter if needed.) Air Filter Installation - 2-Cycle Engines 1. Check the condition of the air box and replace if necessary. 2. Replace the filter over the carburetor boot. Make sure the filter is fully seated in the air box. 3. Tighten the clamp. Do not overtighten, as filter damage could occur. 4. Check the cover gasket and replace if needed. Be sure the cover is seated properly, then snap the clips onto the cover. 5. Reinstall the ATV seat. Air Filter Cleaning - 2-Cycle Engines NOTE: Always replace the main filter when it becomes dirty. In an emergency situation, however, you may clean the main filter if you observe the following practices. 1. Never immerse the main filter in water. Dirt can be transferred to the clean air side of the filter. 2. If compressed air is used for cleaning, never exceed a pressure of 40 PSI. Always use a dispersion-type nozzle to prevent filter damage, and blow the air from the inside to the outside. NOTE: Replace the air filter every 50 hours and more often when the vehicle is operated in very dirty conditions. 118