7.1.3 Adjusting the balance scissors arm
•
••
• Adjusting the second arm
Proceed as follows to adjust the scissors arm:
– Adjusting the friction (for small corrections - picture A)
1. Put the arm in a horizontal position; remove the plastic co-
ordinator covers. This must be done carefully to avoid
breaking the covers themselves.
2. Using a 2.5mm hexagon wrench, loosen the dowel (1).
3. Using two 13 wrenches, adjust the frictioning mechanism by
rotating one of the wrenches ¼ of a turn each time.
4. When you have finished the adjustment, tighten the
previously loosened dowel and reassemble the plastic covers.
– Adjusting the spring (picture B)
If adjustment of the friction is not enough, you can adjust the
spring to optimise the balance:
1 Put the arm in a horizontal position; remove the plastic co-
ordinator covers. This must be done carefully to avoid
breaking the covers themselves.
2 Insert a 6mm hexagon wrench (about 200mm long –
contained in the kit P/N 6661209900). This wrench must
rotate clockwise if the arm tends to go down compared to
the release position; anticlockwise if it tends to go up.
3 When you have finished the adjustment, reposition the
plastic covers.
A
B
1
1
2
2
Ø13
Ø13
Figure 7-3
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