2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 149Get this manual
Measuring Crankshaft (Web-to-Web) 1Using calipers, measure the distance from the outside edge of one web to the outside edge of the other web 3Place the low driven gear onto the countershaft making sure the bearing and bushing are properly positioned; then place the washer onto the shaft4Place the reverse driven gear onto the countershaft making sure the bearing, bushing, and washer are properly positioned; then secure with the snap ring5Place the reverse driven gear dog onto the countershaft; then secure with the snap ringNOTE: The countershaft is now completely assembled for installation
CRANK BALANCER DRIVEN GEAR Disassembling 1Remove the small and large washers from the balancer shaft2Note the position of the alignment marks for assembling purposes; then remove driven gear #1 with driven gear #2Account for pins and springs3Remove driven gear #2 from gear #1; then account for large washer and keyInspecting 1Inspect the gear, pins, and keyway for wear2Inspect the springs for damage or fatigueAssembling 1Place driven gear #2 into driven gear #1; then align the alignment marks of driven gear #1 and driven gear #22Using pair of needle-nose pliers, insert each spring part way into the slot; then install pin and push the springpin assembly into the slot3Place the key and the large washer into position on the balancer shaft4Place the driven gear #1 assembly onto the balancer shaft; then place the large and small washers onto the shaftNOTE: The crank balancerdriven gear assembly is now completely assembled for installation