OM 803 us – Edition 3.7 * 803b520.fm 5-13
Maintenance
Air filter (up to serial no. AI00875)
Replace the air filter elements:
• If the yellow piston B in dirt indicator A reaches the red service mark C.
• Every 1000 operating hours or once a year at the latest.
General instructions for air filter maintenance:
• Store filter elements in their original packaging and in a dry place.
• Do not knock the filter element against other objects as you install it.
• Check air filter attachments, air intake hoses and the air filter element for damage, and
immediately have them repaired or replaced if necessary.
• Check the screws at the induction manifold and the clamps for tightness.
• Check the discharge slot of the dust valve, clean it and replace it if necessary.
☞Squeeze the end of the valve with your hand.
Replacing air filter elements
• Replace air filter element D as follows:
☞Stop the engine
☞Raise the lock lever
☞Remove the starting key and carry it with you
☞Let the engine cool down
☞Open the engine cover
☞Remove dirt and dust from the air filter element and the area around the air filter
☞Open bow clips H on housing section E
☞Remove housing section E
☞Carefully remove air filter element D with slightly turning movements
☞Ensure that all contamination (dust) inside the housing section and dust valve has been
removed
☞Clean the parts with a clean lint-free cloth, do not use compressed air
☞Check the air filter element for damage, only install intact air filter elements
☞Carefully insert the new air filter element D in housing section F
☞Position housing section E (ensure that it is properly seated)
☞Close bow clips H
Fig. 196: Air filter element
D
C
B
A
Fig. 197: Removing the housing section
Fig. 198: Removing the air filter element
H
E
D
G
F
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