2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 465Get this manual
BATTERYCHARGING SYSTEM (After '05) Install the flywheel onto the crankshaft by aligning TV AUPPI the key way with the woodruff keyApply oil to the flywheel nut threads and seating surfaceInstall the washer and flywheel nutHold the flywheel using the special tool and tighten the flywheel nut to the specifiedTOOL: Flywheel holder 07725-0040000 or equivalent commercially available
TORQUE: 64 (6.5 kgf-m, 47 Ibf-ft) Install the left crankcase cover (page 21-13)