DUROMAX DUALFUEL XP12000EH Service Manual page 17

4.
Wash cleaner element
Wash the sponge-like elements in household dish detergent
and warm water.
5.
Dry cleaner element
Pat dry on a dry cloth and allow the elements to dry completely.
6.
Add engine oil to elements
Soak the dry elements in a small amount of engine oil. Ring
out any excess oil.
7.
Replace elements in casing
Replace the sponge-like elements in the air cleaner casing and
replace the cover.
17