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Morbark M20R - Air Filter Maintenance

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03/15
93
1� REMOVE THE AIR FILTER GENTLY - Accidentally bumping the air lter against the lter housing will contaminate the
clean side of the housing, before the new lter element has a chance to do its job.
2� ALWAYS CLEAN THE INSIDE OF THE FILTER HOUSING AND THE GASKET SEALING SURFACES CAREFULLY
Use a clean damp cloth to wipe every surface clean. Check it visually to make sure it's clean before putting in a new
lter. An improper gasket seal is one of the most common causes of engine contamination. Make sure that all hardened
dirt ridges are completely removed, both on the bottom and top of the air cleaner.
3� CHECK FOR UNEVEN DIRT PATTERNS - Your old lter has valuable clues to dust leakage or gasket sealing
problems. A pattern on the element clean side is a sign that the old lter element was not rmly sealed or that a dust
leak exists. Identify the cause of that leak and rectify it before installing a new lter.
4� PRESS YOUR FRESH GASKET TO SEE THAT IT SPRINGS BACK - Make sure your new lter is made with a highly
compressible gasket that springs back promptly when nger pressure is released. A high quality gasket is one of the
most important parts of the lter.
5� MAKE SURE THE GASKET SEATS EVENLY - If you don't feel the gasket seating evenly for a perfect seal, you don't
have protection.
6� ENSURE AIR-TIGHT FIT ON ALL CONNECTIONS AND DUCTS - Check that all clamps and ange joints are tight, as
well as the air cleaner mounting bolts. Seals may leak immediately-leaks mean dirt is directly entering your engine.
AIR FILTER MAINTENANCE