Inclination Of The Blade Point Of The Counter Knife; Floating Amount Of The Thread Tension Disk - JUKI LK-1900AN Engineer's Manual

(18) Inclination of the blade point of the counter knife

To cut the two threads (needle thread and, bobbin thread) uniformly, the blade face of the counter knife 1
is made to have an inclination of 0.2 mm.

(19) Floating amount of the thread tension disk

When the sewing machine power supply is turned off (AT solenoid 1 is OFF), the gap between AT thread
tension discs is 0.6 to 1 mm.
Close contact
Standard adjustment
Standard adjustment
– 26 –
0.6 to 1 mm