2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 77Get this manual
MAINTENANCE
SPARK PLUG
REMOVAL
Remove the seat (page 2-4)Loosen the band screw and remove the trim clip and resonance chamberRoll up the rubber seatSCREW RUBBER SEAT TRIM CLIP
RESONANCE CHAMBER
Clean around the spark plug base with compressed air before removing, and be sure that no debris is allowed to enter the combustion chamber
Disconnect the spark plug cap and clean around the spark plug base with compressed airRemove the spark plug and inspect or replace as described in the maintenance schedule (page 3-4)
SPARK PLUG CAP
SPARK PLUG