2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 203Get this manual
CRANKCAS ETRANSMISSIONCRANKSHAFT Apply engine oi to each bearingsDrive new mainshaft bearing into the left crankcase with the sealed side facing down, using the special too lsTOOLS: Mainshaft bearingDriver Attachment, 37 40 mm Pilot, 16 mm
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Drive new balancer and countershaft bea ri ngs wit the markings facing up, using the special too lsTOOLS: Balancer bearing: Driver Attachment, 37 40 mm Pilot, 13 mm Countershaft bearing: Driver Attachment, 52 55 mm Pilot, 25 mm