Position Of Synchronisation Disc; Feed-Dog Position In The Stitch Plate - Bernina activa 125 Service Manual

Position of the synchronisation disc
Rough adjustment after disassembling
Standard:
Position the balance piece with pin 92.
•
Fixation screw 77a on the synchronisation disc 77 must
•
be approx. at 30° above the horizontal position.
Correction (Rough adjustment):
Loosen the screw 77a.
•
Turn the handweel until the needle bar is in the highest
•
position.
Adjust the synchronization disk until the screw 77a is
•
facing straight towards the front.
Tighten the screw 77a.
•
Fine adjustment (e.g. as check):
Standard:Go into basic setting of service programme
•
(page 12).
Turn handwheel in the direction of rotation until signal
•
no.3 is no longer active (all 3 must be inactive at the
same time).
The balance piece should now be in the pinning position.
•
Check the signals of the synchronisation disc.
•
Feed-dog position in the needle plate
Standard:
The feed-dog must be equidistant to each side of the
•
needle plate.
Check:
When lowering the feed-dog, it must drop by itself.
•
Correction:
Loosen screw 93.
•
Move the feed-dog carrier shaft 94 sideways to the cor-
•
rect position.
Tighten screw 93.
•
Attention: Check for ease of movement!
77 77
a
93
94
37
92