75
Repair Instructions
42. Removing and fitting the needle thread tension
Removal:
z Remove the needle thread tension.
z Press the two plastic noses 131 together and remove tension dial 132 (fig. 93).
z Remove spring disk 133.
z Turn knurled nut 125 out of guide 134.
z Remove guide 134.
z Remove knurled nut 125 and pressure spring 135.
z Pull out or knock out cemented tension stud 136 complete with pressure piece 137 and the three tensi-
on disks 138, 139 and 140.
Fitting:
z Insert tension stud 136 with the three tension disks and fit pressure piece.
z Cement tension stud into the mounting plate with Onmivit-Rapid.
z Push pressure spring 135 and knurled nut 125 onto tension stud 136.
z Insert guide 134 with its right side and fully screw in knurled nut 125.
z Push on adjustment dial 132 making sure that the guide nose is in contact with the outer surface of the
curve.
z Install the needle thread tension.
z Adjust the needle thread tension according to section 35.
