Operation Manual

Operating Instructions 650-10 - 02.0 - 10/2015 25
When the largest thread quantity is required then the thread
tension spring (3) must be pulled approx. 0.5 mm down from its
upper end position. This occurs when the needle thread loop
matches the maximum hook diameter.
Fig. 8: Setting the thread regulator
To set the thread regulator:
1. Loosen the screw (1).
2. Change the setting of the thread regulator (2).
3. Tighten the screw (1).
4.6 Winding the hook thread
(1) - Screw
(2) - Thread regulator
(3) - Thread tensioning spring
②
①
③
NOTICE
Property damage from winding without sewing material!
Winding without sewing material can cause damage to the
sewing feet and the bobbin capsule in the hook.
Lock the sewing feet at top dead center and set the sewing
foot stroke to the lowest value when winding without sewing
material.