2008 Suzuki LT-A400/F, LT-F400/F ATV Service Manual, Page 299Get this manual
Differential: 5) Unlock the bearing lock-nut 3B-24
8) Remove the final gear case cover bolts diagonally and evenly9) Pry up the final gear case cover with mm screws "A"
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6) Remove the bearing lock-nut with the special toolSpecial tool (C): 0992441830 (Bearing retainer wrench)
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10) Remove the final driven gear (4) shims and washer (5)