preparing the headstock

NOTE
Use a ball sleeve without integrated catch profile.
  1. Fit the ball sleeve onto the lower link pin.
  2. Fit the catch profile onto the lower link pin and secure it.
  3. Fasten the top link pin with the ball sleeve in the slotted hole.
  4. Fit the sleeve onto the top link pin.
  5. Secure the top link pin with the linch pin.