
Operation
22
Operating Instructions 512/532 - 05.0 - 04/2018
3.6
Setting the hook thread tension
Fig. 6: Setting the hook thread tension
The required hook thread tension must be generated by the ten-
sioning spring (1). The bobbin housing upper section (3) should
slowly fall under its own weight when held by the threaded hook
thread.
Adjusting the tensioning spring
To adjust the tensioning spring:
1.
Remove the bobbin housing upper section (3) with the bobbin.
2.
Adjust the tensioning spring (1) via the adjustment screw (2)
until the correct tension is set.
3.
Insert the bobbin housing upper section (3).
CAUTION
Risk of injury due to sharp and moving parts!
Cutting or crushing are possible.
Only set the hook thread tensioner with the
machine switched off.
(1) - Tension spring
(2) - Regulating screw
(3) - Bobbin housing upper section
①
②
③
Содержание 512/532
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