Check
1. Unscrew the gearchange lever pinch bolt and slide the lever off the shaft, noting the alignment of the punch mark on the gearchange shaft end with either the punch mark on the lever or with the slit in the lever clamp (according to model) (see illustration 3.8). If no marks are visible make your own so that the lever can be installed in the correct position straight away.
2. Unscrew the bolts securing the front sprocket cover and remove the cover, and on XL650V and XRV750 models the drive chain guide plate (see illustration).
![](https://motoinstruction.ru/img/honda/19/125789.jpg)
17.2. Unscrew the bolts (arrowed) and remove the cover
3. Check the wear pattern on both sprockets (see Chapter 1, Section 1). If the sprocket teeth are worn excessively, replace the chain and both sprockets as a set. Whenever the sprockets are inspected, the drive chain should be inspected also (see Chapter 1). If you are renewing the chain, renew the sprockets as well.
4. Adjust and lubricate the chain following the procedures described in Chapter 1.
Replacement
Front sprocket
Keep your old front sprocket as it can be used along with a holding tool to lock the transmission input shaft should you ever need to remove the clutch (see Chapter 2). Slide the sprocket retainer onto the shaft and align it with the groove across the shaft splines (see illustration 17.7), then turn the plate so its splines align with those on the shaft, thereby locking it on the shaft, and so the bolt holes align (see illustration). Apply a non-permanent thread lock to the bolts and lighten them to the specified torque setting, using the rear brake to prevent the sprocket turning (see illustration).
5. Unscrew the gearchange lever pinch bolt and slide the lever off the shaft, noting the alignment of the punch mark on the gearchange shaft end with either the punch mark on the lever or with the slit in the lever clamp (according to model) (see illustration 3.8). If no marks are visible make your own so that the lever can be installed in the correct position straight away.
6. Unscrew the bolts securing the front sprocket cover and remove the cover, and on XL650V and XRV750 models the drive chain guide plate.
7. Have an assistant apply the rear brake. Unscrew the sprocket retainer plate bolts, then rotate the plate in its groove in the shaft so that the splines are misaligned, and slide the plate off the shaft (see illustration).
![](https://motoinstruction.ru/img/honda/19/125790.jpg)
17.7. Unscrew the two bolts, then turn the plate as described and draw it off the shaft
8. Slacken the drive chain as described in Chapter 1.
9. Slide the sprocket and chain off the shaft and slip the sprocket out of the chain (see illustrations).
![](https://motoinstruction.ru/img/honda/19/125791.jpg)
17.9a. Draw the sprocket off the shaft...
![](https://motoinstruction.ru/img/honda/19/125792.jpg)
17.9b ...and disengage it from the chain
10. Engage the new sprocket with the chain, making sure the marked side is facing out, and slide it on the shaft (see illustrations 17.9b and a). Take up the slack in the chain.
Install the bolts and the nuts with their washers, and tighten the nuts evenly and in a criss-cross sequence to the torque setting specified at the beginning of the Chapter.
11. Slide the sprocket retainer onto the shaft and align it with the groove across the shaft splines (see illustration 17.7), then turn the plate so its splines align with those on the shaft, thereby locking it on the shaft, and so the bolt holes align (see illustration). Apply a non-permanent threadlock to the bolts and lighten them to the specified torque setting, using the rear brake to prevent the sprocket turning (see illustration).
![](https://motoinstruction.ru/img/honda/19/125793.jpg)
17.11a. Fit and align the retainer plate...
![](https://motoinstruction.ru/img/honda/19/125794.jpg)
17.11b ...then install the bolts
12. On XL650V and XRV750 models fit the guide plate. Fit the sprocket cover and tighten Its bolts (see illustration). Slide the gearchange lever onto the shaft, aligning it as noted on removal, and tighten the pinch bolt securely (see illustration 3.8). Adjust and lubricate the chain following the procedures described in Chapter 1.
![](https://motoinstruction.ru/img/honda/19/125795.jpg)
17.12. Install the sprocket cover
Rear sprocket
13. Remove the rear wheel (see Chapter 7).
14. On XL models, unscrew the nuts and bolts securing the sprocket to the hub assembly, and remove the washers (see illustration). Remove the sprocket, noting which way round it fits. Fit the sprocket onto Ihe hub with the stamped mark facing out. Lubricate the threads of the bolts with oil.
![](https://motoinstruction.ru/img/honda/19/125796.jpg)
17.14. Rear sprocket bolts (arrowed) - XL600V shown
15. On XRV models, unscrew the nuts securing the sprocket to the hub assembly. Remove the sprocket, noting which way round it fits. Check that the studs are tight in the hub - if any are loose, remove them all using the correct tools, then clean their threads, apply a suitable thread-locking compound, then fit them back into the hub and tighten them securely. Fil the sprocket onto the hub with the stamped mark facing out. Lubricate the threads and seats of the nuts with oil. Install the nuts and tighten them evenly and in a criss-cross sequence to the torque setting specified at the beginning of the Chapter.
16. Install the rear wheel (see Chapter 7).