2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 166Get this manual
CRANKSHAFT ITRANSMISSION MAINSHAFT Check the spline grooves and sliding surfaces for abnormal wear or damageMeasure the mainshaft 0.0SERVICE LIMITS:
at M4 gear:19.93 mm 10.785 in) at M5 g88r:14.94 mm 10.588 in)
Calculate the bushing-l a-shaft clearance
SERVICE LIMIT: 0.10 mm 10.004 in )
REVERSE IDLE GEAR SHAFT Measure the reverse idle gear 1.0
SERVICE LIMIT: 13.04 mm (0.513 in)