The clutch is now mounted, together with all the parts of the kickstarter, without any incidents. The water pump drive shaft was damaged, it was quite corroded and leaking because of the worn mechanical seal, which damaged the whole shaft afterwards.
Normally that little shaft with the bearing costs about 250 €, at this point I have to thank Harry, who gave me the shaft from his decommissioned RGV250 (also a living room project). Shaft, shaft sealing ring to the clutch and slide sealing ring to the water were exchanged. Unfortunately I did not manage to remove the old mechanical seal without destroying it.
|Water Pump Seal||21,62 €|
|Engine Shaft Seals||43,47 €|