2007-2009 Honda TRX300EX TRX300X service manual, Page 212Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT Measure the connecting rod big end side clearance SERVICE LIMIT: 0.80 mm (0.031 in)
Measure the connecting rod big end radial clearance in an and directionsSERVICE LIMIT: 0.05 mm (0.002 in)
INSTALLATION
Drive new left crankshaft bearing into the left crankcase