2006 Arctic Cat ATVs factory service and repair manual, Page 502Get this manual
4Using two open-end wrenches, remove the lock nut securing the shift rod to the upper shift armRemove the shift rod and discard the lock nut1NOTE: Never reuse lock nutOnce lock nut has been removed, it must be replaced with new lock nut 3Place the spring into position between the upper shift arm and shift lever; then making sure the O-rings are in place on the axle, secure the shift lever to the arm with the existing axle and nut
4Check shift lever adjustment (see Section 2); then tighten jam nut (A) securely5Install the left-side splash panel
INSTALLING
1Place the shift rod into position on the engine shift arm and secure with the existing E-clip (TBXTRV400500650 HI)On the 650 V-Twin, connect the front and rear shift arms with two cap screwsOnly finger-tighten at this time