2006 Arctic Cat DVX 400 Service Manual, Page 68Get this manual
2Align the keyway with the key and install the rotorflywheel; then using an offset 27 mm wrench, hold the flywheel and tighten the nut to specifications SP251
5Apply engine oil to the threads; then install the primary drive gear and nut and while holding the generator rotor with 27 mm offset wrench, tighten to specifications
3Install the pins (1); then install the crank balancer drive gear (2)Install the key (3) and cam chain drive sprocket (4)