Not long ago a riding friend purchased a 1997 Yamaha SX 700 and wanted to install a different track. Back in the days of the trailing arm Yamaha models, we were swapping tracks with great frequency and had written an internal procedure for swapping the track on these models. This procedure was written for our own use, and was based on the 1997 and up trailing arm models, pre-SX Viper, but it should be fairly accurate for the Viper models as well.
We shared this procedure with our friend, and he asked us if something as valuable and time saving as this had ever been published in the magazine. We hadnâ€™t, so here it is. It is by no means a replacement for technical competence or an actual service manual, but if you are qualified to install a different track in one of these models it will likely make the procedure much easier. Nobody from Yamaha service has ever edited or validated this, it is simply our â€œcheat sheetâ€ from years back that should make somebody very happy. Ride on.
1. Remove secondary clutch and all shims behind clutch, if any.
2. Remove speedometer cable from bearing plate.
3. Remove bearing plate.
4. Remove rear suspension (6 bolts).
5. Remove brake caliper (2 bolts).
6. Remove two parking brake lock nuts.
7. Un-seat both parking brake springs.
8. Remove sleeve on parking brake bolt.
9. Pull parking brake bolt out just enough to lift first pad arm from behind disk.
10. Remove chaincase cover.
11. Loosen tensioner lock nut, bolt and remove tensioner.
12. Remove nut and spacer on top gear.
13. Remove bolt and washer on bottom gear.
14. Remove chain and gears together.
15. Remove upper jackshaft spacer & lower drive shaft spacer.
16. Remove chaincase bolts (4 of them).
17. Lift chaincase up off of jackshaft and driveshaft.
18. Remove two Torx screws in PTO bearing sleeve.
19. Remove bearing from lower drive shaft, PTO side.
20. Press track up into bulkhead.
21. Lift drive axle, pull out.
22. Install new track.
23. Reinstall all components in reverse order of disassembly.