Disassembling the secondary shaft
1 – sealing ring, 2 – 1st gear pinion, 3 – 1st gear synchronizer ring, 4 – 1st–2nd gear synchronizer

1. Remove the retaining ring and slide the third/fourth gear synchronizer together with the third gear pinion off the front of the secondary shaft, using a puller if necessary. Separate the pinion and synchronizer, then remove the third gear synchronizing ring.

2. Remove the outer ring from the second gear pinion, then remove the two mounting half rings.
3. Slide the second gear pinion over the front of the input shaft and remove the second gear synchronizing ring.
4. Mark the relative positions of the first and second gear synchronizer hub and the sleeve relative to each other and the location of the fork groove, then move the sleeve forward from the hub and remove the locks and springs. The synchronizer hub must not be removed from the secondary shaft.

5. Remove the speedometer drive gear from the rear of the secondary shaft.
6. Remove the fifth gear synchronizing unit and the fifth gear driven gear from the input shaft.
7. Remove the retaining ring holding the secondary shaft bearing, then place the center crankcase on wooden blocks and remove the secondary shaft through the bearing.

8. Remove the ring, first gear pinion and first gear timing ring.
9. If necessary, remove the retaining ring and remove the bearing from the middle housing using a metal tube. Remove the synchronizers, having previously marked the relative position of the hub and bushing. Move the bushing from the hub and remove the locking rods and springs.
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