2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 103Get this manual
FUEL SYSTEM Remove the a-rings and joint pipea-RINGS
Apply vacuum to the vacuum hoseThe vacuum should be maintainedAir should not flow through the valve ports when the vacuum is applied, and sho ul flow when the vacuum is not app liedPORTS
VACUUM HOSE
VACUUM CHAMBER