2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 171Get this manual
CRANKSHAFT ITRANSMISSION Measure the side clearance between the connecting rod big end and crank weight with feeler gaugeSERVICE LIMIT: 0.80 mm (0.031 in )
Measure the radial cleara nce at the connecti ng rod big end in an and directionsSERVICE LIMIT: 0.05 mm (0.002 in )
CRANKSHAFT BEARING REPLACEMENT
Turn the inner race of each bearing with you fingerThe bearings should urn smoothly and quietlyAlso check that he outer race of each bearing fits tightly in the crankcase