2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 438Get this manual
ELECTRICAL ('04'05) Install the flywheel onto the crankshaft by aligning 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 nutTOOL: Flywheel holder 07725-0040000 or commercially available equivalent
TORQUE: 74 (7.5 kgf m, 54 Ibfft) Install the left crankcase cover (page 20-10)