Honda HP500H Manuel De L'utilisateur page 42

Servicing the air cleaner
A dirty air cleaner will restrict air flow to the carburetor. To prevent
carburetor malfunction, service the air cleaner regularly. Service more
frequently when operating the power carrier in extremely dusty areas.
Never use gasoline or low flash point solvents for cleaning the air
cleaner element. A fire or explosion could result.
CAUTION:
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.
1.Unscrew the wing nut, remove the air cleaner cover and remove the
foam element.
2.Wash the element in a solution of household detergent and warm
water, then rinse thoroughly, or wash in nonflammable or high flash
point solvent. Allow the element to dry thoroughly.
3.Soak the element in clean engine oil and squeeze out the excess oil.
The engine will smoke during initial start-up if too much oil is left in
the element.
4.Reinstall the form element and the cover.
AIR CLEANER COVER
FOAM ELEMENT
WING NUT
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