NACIONAL MOTOR Derbi Euro 3, Руководство по ремонту

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- Extract the driven bell housing.
- Pay attention to the centre bush and set of washers.
- Extract the driving bell housing.
- To untighten the balance shaft gear securing nut, on tho-
se engines where it is fitted (1), as well as for the engine
pinion nut (2), insert tool number 14.
- Engine pinion extraction tool:
Models with balance shaft: Standard Tool.
Models without balance shaft: Tool number 10.
- Check the thickness of the clutch lining on each disk,
with the aid of a thickness calliper.
Service limit: 3.8 mm.
- Renew the disk if there is a loss of lining, thermal fati-
gue (discoloration), distortion, or if the external notching
is damaged.
- Check the clutch disks for warping.
Service limit:
0,15
mm.