2011 Yamaha Motorsports Big Bear 400 4x4 IRS Owners Manual - Page 103
2011 Yamaha Motorsports Big Bear 400 4x4 IRS Manual
Page 103 highlights
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. 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. NOTICE: Make sure that the air filter element is properly seated in the air filter case. Never operate the engine with the air filter element removed. This will allow unfiltered air to enter the engine, causing rapid engine wear and possible engine damage. Additionally, operation without the air filter element will affect carburetor jetting with subsequent poor performance and possible engine overheating. [ECB00461] 8-23 8
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