55
Repair Instructions
24. Dismantling and assembling the needle thread tension
Removal:
• Remove the needle thread tension.
• Press the two plastic noses 78 together and remove tension dial 79 (fig. 57).
• Remove spring disc 80.
• Turn milled nut 81 out of guide 82.
• Remove guide 82.
• Remove milled nut 81 and pressure-spring 83.
• Pull out or knock out cemented stud 84 complete with pressure piece 85 and the three tension
discs 86, 87 and 88.
Fitting:
• Insert tension stud 84 with the three tension discs 86, 87 and 88 and the pressure piece 85.
• Cement the tension stud into the mounting plate with Onmivit-Rapid.
• Push pressure-spring 83 and milled nut 81 onto tension stud.
• Insert guide 82 with its right side and fully screw in milled nut 81.
• Push on tension dial 79 making sure that the guide nose is in contact with the outer surface of the
curve.
• Install the needle thread tension.
• Set the needle thread tension according to section 20.
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