2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 108Get this manual
FUEL SYSTEM Install the air cut-off valve and secure it with the screwConnect the vacuum hose to the vacuum joint pipeSCREW VACUUM HOSE
Turn the throttle stop screw to align the butterfly throttle valve with the edge of the outside by-pass hole in the carburetor body, if the throttle stop screw was removed