2006 Honda TRX680 Rincon Factory Service Manual, Page 173Get this manual
FUEL SYSTEM (PGM-FI) Install the IACV retainer while aligning the valve boss with the groove in the retainer
Install and tighten the two screws to the specified torqueTORQUE: 2.1 (0.21 kgf-m, 1.5 Ibfft) Connect the IACV 4P (Black) connector