Bobbin case lifter
50 Service Instructions 827/827-M - 01.0 - 05/2019
11 Bobbin case lifter
Fig. 33: Bobbin case lifter
The hook pulls the needle thread through between the nose of the bobbin
case (3) and the slot (4) in the throat plate.
The bobbin case lifter (1) now pushes the bobbin case (2) away so that a
gap appears for the thread.
If the hook tip is located below the bobbin case lifter (1), the bobbin case
lifter (1) must open so that the thread can also slide past in that position.
So that the thread can slip through without a problem, the width of the
lifting gap and the timing of opening have to be set.
Disturbance
• Thread breaking
• Formation of loops on the bottom side of the seam
• Loud machine noise
WARNING
Risk of injury from moving parts!
Crushing possible.
Switch off the machine before adjusting the bobbin
case lifter.
(1) - Bobbin case lifter
(2) - Bobbin case
(3) - Nose of the bobbin case
(4) - Slot
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