2005 Kawasaki KAF620 Mule 3010 Trans 4x4 Service Manual, Page 241Get this manual
12-20 FINAL DRIVE Front Final Gear Case
Bevel Gear Inspection
Visually check the bevel gears [A] for scoring, chipping, or other damageReplace the bevel gears as set if either gear is damaged
Differential Gear Inspection
check the differential gears [A] for scoring, chip Visually other damageping, or the differential pinion gear Also, inspectwhere the differential gearsshaft [B] and gear housing [C] rubIf they are scored, discolored, or otherwise damaged, replace them as set