2009-2011 Honda FourTrax Rancher AT TRX420FA/FPA Service Manual, Page 172Get this manual
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FUEL SYSTEM (PGM-FI)
Relieve the fuel pressure (page 6-29)Remove the IACV (page 6-50) Remove the bolt and fuel feed hose clampDisconnect the quick connect fitting from the fuel injector (page 6-