2009 Yamaha Motorsports Big Bear 400 4x4 IRS Owners Manual - Page 115
2009 Yamaha Motorsports Big Bear 400 4x4 IRS Manual
Page 115 highlights
7. Squeeze the excess water or solvent out of the sponge material and let it dry. ECB00470 NOTICE Do not twist the sponge material when squeezing it. G Do not apply oil to the sponge material. G 10. Pull the sponge material over the air filter element. 11. Insert the air filter element assembly into the air filter case, and then install the air filter case cover by hooking the holders onto the air filter case. 12. Install the seat. 8. Check the sponge material and replace it if damaged. 9. Tap the air filter element lightly to remove most of the dust and dirt. Blow out the remaining dirt with compressed air as shown. If the air filter element is damaged, replace it. TIP The air filter element should be cleaned every 20- 40 hours. It should be cleaned more often if the ATV is operated in extremely dusty areas. Each time the air filter element maintenance is performed, check the air inlet of the air filter case for obstructions. Check the air filter case rubber joint 8-23 8