Honda EU20i Owner's Manual page 22

Check the air cleaner.
3.
Check the air cleaner elements to be sure they are clean and in good
condition.
Loosen the maintenance cover screw and remove the maintenance
cover. Press the latch tab on the top of the air cleaner body, remove
the air cleaner cover, check the elements.
Clean or replace the elements if necessary (see page 41 ).
Never run the engine without the air cleaner elements. Rapid engine
wear will result from contaminants, such as dust and dirt, being
drawn through the carburetor, into the engine.
MAINTENANCE COVER SCREW
MAINTENANCE COVER
AIR CLEANER BODY
AIR CLEANER ELEMENTS
AIR CLEANER COVER
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