Position of the hook and needle
Service Instructions 869-M PREMIUM - 00.0 - 07/2018 49
5. Tilt the machine head ( p. 17).
6. Loosen the threaded pins (3).
7. Turn the hook such that the hook tip (1) points exactly to the vertical
center line of the needle (2).
The hook tip (1) is in the lower third of the needle groove.
8. Tighten the gear wheel.
The threaded pins (3) clamp the gear wheel.
9. Tighten the threaded pins (3).
10. Remove the lock.
11. Assemble the feed dog ( p. 23).
12. Assemble throat plate, throat plate slide and free arm cover ( p. 22).
13. Finish the service routine.
10.3 Setting the needle guard
The needle guard prevents contact between needle and hook tip.
Order
First, check the following settings:
• Loop stroke position ( p. 48)
• Hook side clearance ( p. 46)
• Needle bar height ( p. 50)
• A straight and undamaged needle has been inserted ( Operating
Instructions)
Proper setting
Machine is locked in place at position 1 ( p. 25).
The needle guard pushes the needle away just enough so that it cannot
be touched by the hook tip.
To set the needle guard:
1. Execute the service routine Needle-Hook > Timing
( p. 14).
The software is used to define the necessary presettings on
the machine.
2. Disassemble the throat plate ( p. 22).
3. Disassemble the feed dog ( p. 23).
4. Disassemble the throat plate slide ( p. 21).
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