2001-2003 Honda TRX500FA Factory Service Manual, Page 56Get this manual
MAINTENANCE Remove the sub-ai cleaner filte from the air cleaner jointRemove the dust cover and clean it it com ressed air if it is dirtyInst all the dust co ver in pos it ion
W ash the el eme nt and filter in non-flammable high lash poi nt solventSq ueeze out the solvent th rou ghly, and allow the eleme nt and filter to dryInsta ll the sub-air cleaner ilter onto the air cleaner joi nt
Squeeze ou t
Apply approximately 20 10 OZ) of Pro Honda Foam .7 Filter Oil equival ent oil from th inside of he ele -
mentPlace the element into plastic ba and spread the oil eve nly by hand