1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 42Get this manual
FUEL SYSTEM
AIR CLEANER CASE
Remove the seatrear fenderRemove the rear brake reservoir from the air cleaner case
Loosen the connecting tube and air intake duct bands at the case sideAfter '86: Remove the resonator (see below)Remove the air cleaner case attaching bolt, then remove the ai cleaner caseFor air cleaner element service, see page 2-4