2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 332Get this manual
CRANKCASETRANSMISSIONCRANKSHAFTBALANCER (After '05) INSPECTION Check the gear shifter groove, dogs, dog holes and teeth for abnormal wear or damageMeasure the I.Dof each gearSERVICE LIMITS: M4: 28.05 mm (1.104 in) M5: 28.06 mm (1.105 in) C1: 22.07 mm (0.869 in) C2: 30.07 mm (1.184 in) C3: 28.07 mm (1.105 in) Check the bushings for abnormal wear or damageMeasure the O.Dof each bushingSERVICE LIMITS: M4, M5: 27.94 mm (1.100 in) C1: 21.94 mm (0.864 in) C2: 29.94 mm (1.179 in) C3: 27.94 mm (1.100 in) Measure the I.Dof each bushingSERVICE LIMITS: M5: 25.06 mm (0.987 in) C1:19.06 mm (0.750 in) C2: 27.06 mm (1.065 in) C3: 25.06 mm (0.987 in) Check the spline grooves and sliding surfaces of the mainshaft and countershaft for abnormal wear or damageMeasure the O.Dof the mainshaft and countershaftSERVICE LIMITS: at M5: 24.95 mm (0.982 in) at C1: 18.94 mm (0.746 in) at C2: 26.94 mm (1.061 in) at C3: 24.94 mm (0.982 in)