2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 211Get this manual
CRANKCASETRANSMISSIONCRANKSHAFT Measu re the 1.0of each gearSERVICE LIMITS: M4: 23.04 mm (0.907 in) M5:18.04 mm (0.710 inC1C2, C3, CR: 25.04 mm (0.986 in) Reverse idle: 13.04 mm (0.513 in)
Check the bushings for abnormal wear or damageMeasu re the gear bushing 00 SERVICE LIMITS: M4: 22 .94 mm (0.903 in) M517.94 mm (O.706 in) ClC2, C3, CR: 24.94 mm (0.982 inCalculate the gear-tO-bush ing clearanceSERVICE LIMIT: 0.10 mm (0.004 in) Measure the gear bushing 1.0SERVICE LIMITS: M4: 20.04 mm (0.789 in) M5: 15.04 mm (0.S92 in) C3: 22.04 mm (0.868 in) Check the reverse idle shaft, mainshaft and countershaft for abnormal wea or damageMeasure the shaft 0.0SERVICE LIMITS: At M4: 19.93 mm (0.785 in) At M5: 14.94 mm (0.588 in) At C3: 21 .93 mm (0.863 in) Reverse idle: 12.94 mm (0.509 in) Calculate the gea bushing-to-shaft clearanceSERVICE LIMIT: 0.10 mm (0.004 in) M4 SHIFT DRUM Inspect the shift dru journals for scoringscratches or evidence of insufficient lubricationCheck the guide grooves for abnormal wear or dam ageM5