Thread Guide Plate; Loop Lift - Bernina activa 125 Service Manual

Thread guide plate

Standard:
The distance of the thread guide plate should be
0,3 to 0,5 mm from the right edge and 0,7 mm to the hook
race.
Correction:
The thread guide plate should be in a position, that
distances are within the tollerances.
Hook adjustment loop lift (synchronisation)
Standard:
Remove the needle plate
•
Pin the stepping motor to needle position centre
•
Pin the balance piece of the needle drive (4 mm pin
•
030349.70.00) and turn the handwheel until the stop
position is reached.
Hook drive crank 104 must now be pinned with pin
•
(001356.50.00).
Correction hook drive crank:
Loosen the second screw 78 in direction of rotation of
•
the drive belt flange.
Loosen the first screw in direction of rotation. Now turn
•
the drive belt flange, until the hook drive crank can be
pinned.
Tighten the screws.
•
Thread guide plate
Thread positioning plate
Hook race ring
Thread positioning plate
Thread guide plate
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