Adjusting The Thread Regulator - DURKOPP ADLER M-type 867 Instruction Manual

6.5

Adjusting the thread regulator

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Caution: danger of injury !
Turn off the main switch.
The thread regulator may only be adjusted with the sewing machine
switched off.
The thread regulator 1 controls the quantity of needle thread required
for stitch formation.
The thread regulator must be precisely adjusted for an optimum result.
At the correct setting the needle-thread loop must slide at low tension
over the thickest point of the hook.
–
Undo screw 2.
–
Adjust the thread regulator 1.
Thread regulator to the left = more thread
Thread regulator to the right = less thread
–
Tighten screw 2.
Adjustment information:
If the maximum quantity of thread is required the thread-tensioning
spring 3 must be pulled upwards about 0.5 mm from its lower limit
position. This is the case when the needle-thread loop passes the
maximum hook diameter.
Keystone Sewing Machine Company, Inc.
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