Honda WT20X Manuel De L'utilisateur page 19

3. Check the air cleaner element.
Remove the wing nut and air cleaner cover.
Check the air cleaner elements to be sure they are clean and in good
condition. Clean or replace the elements if necessary (see page 27 ).
AIR CLEANER COVER WING NUT
ELEMENT
Never run the engine without the air cleaner. Rapid engine wear will
result from contaminants such as dust and dirt being drawn through
the carburetor into the engine.
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