2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 119Get this manual
FUEL SYSTEM Remove the screw and throttle drum coverSCREW
THROTTLE DRUM COVER Slide the rubber cap off the throttle cable adjusterLoosen the throttle cable lock nut and remove the adjuster from the carburetor body, and disconnect the cable from the throttle drumTHROTTLE CABLE ADJUSTER