2001 Arctic Cat ATVs factory service and repair manual, Page 328Get this manual
2While holding the differential case with the pinion shaft hole upward, insert the pinion shaft (with the alignment hole toward the top) through the differential case and through washer, two gears, and another washerFig6-69
BMeasure the flattened portion of the solderMeasurement must be between 0.05-0.10 mm (0.002-0.004 inFig6-72