Setting the spool housing lifter
50 Service Manual 867 Version 02.0 - 04/2015
11 Setting the spool housing lifter
Fig. 37: Spool housing lifter
The hook pulls the needle thread through between the nose of the spool
housing (3) and the recess in the throat plate (4).
The spool housing lifter (2) now pushes the spool housing (1) away so that
a gap appears for the thread.
If the hook tip is located below the spool housing lifter, then the spool
housing lifter must open so that the thread can also slide past in that posi-
tion.
So that the thread can slip through without a problem, the width of the lift-
ing gap and the point in time of opening have to be set.
Faults caused by an incorrect setting:
• Thread breakage
• Formation of loops on the bottom side of the seam
• Loud machine noise
11.1 Setting the lifting gap
Order
Always check the width of the lifting gap after making changes to the nee-
dle thread size. The correct width of the lifting gap depends on the size of
the needle thread.
Proper setting
The needle thread slides through unobstructed between the nose of the
spool housing and the recess in the throat plate.
3
4
1
2
(1) - Bobbin housing
(2) - Spool housing lifter
(3) - Spool housing nose
(4) - Recess in the throat plate
WARNING
Risk of injury
Crushing injuries from moving parts.
Switch off the sewing machine before setting the
width of the lifting gap.
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