2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 217Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT Measure the connecting rod big end side clearanceSERVICE LIMIT: 0.80 mm (0.031 in)
Measure the connecting od big end radial clearance in an and directionsSERVICE LIMIT: 0.05 mm (0.002 in)
Set the crankshaft on stand or V-blocks and mea sure the run out using dial indicatorSERVICE UMITS: Front: 0.06 mm (0.002 in) Rear: 0.03 mm (0.001 in)