11.FINAL REDUCTION/ TRANSMISSION SYSTEM MXU 550EXi/MXU500i Pawl Cam Follower Upper shift fork Inspect the shift fork cam follower and shift fork pawl. Scoring/beads/wear Replace a set. Inspection the spring. Cracks or damage Replace a set.. Spring Cam Follower Lower shift fork Inspect the shift fork cam follower and shift fork pawl. Scoring/beads/wear Replace. Pawl Primary drive shaft Check the gear teeth for blue discoloration, pitting or wear. 11-20