1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 157Get this manual
CRANKCASECRANKSHAFTITRANSMISSION Hold the driven shaft with the shaft holder and tighten the drive gear inner race lock nutTORQUE: 70-80 Nm (7.0-8.0 kg-m, 51-58 ft-Ibl Torque wrench scale reading: 64-73 Nm (6.4-7.3 kg-m, 46-53 ft-Ib) TOOLS: Shaft holder Lock nut wrench30 64 mm
07923-6890101 07916-MB00001
GEAR TOOTH CONTACT PATTERN CHECK
Rotate the drive gear several times in both directions of rotationRemove the four bolts attaching the driven gear bearing holder and the driven gear assembly Check the gear tooth contact pattern after removing the driven gear