2.5.7 Exchanging the hook
Caution: Danger of injury !
Switch off the main switch.
Exchange the hook only with the sewing unit switched off.
–
Remove the throat plate 6 after loosening the fastening screws.
–
Remove the bobbin case top part 1 with bobbin.
–
Unscrew the fastening screws 2 of the hook cover 3.
–
Take off the hook cover 3.
–
Take the bobbin case bottom part 4 out of the hook.
For this purpose turn the handwheel back and forth slightly.
ATTENTION !
Do not use force when removing the bobbin case bottom part.
–
Unscrew the fastening screws 5 of the hook.
–
Lift and remove the hook from the hook shaft.
–
Put a new hook on the hook shaft.
The position of the hook on the hook shaft is determined by the
arrangement of the drill-holes at the hook bottom.
Thus it is guaranteed that following the looping stroke the hook tip
is at the level of the middle of the needle again.
–
Insert the bobbin case bottom part 4 in the new hook.
Attention!
The holding lug 7 of the bobbin case bottom part must reach into
the gap of the throat plate.
–
Put on the hook cover 3 and fasten with the screws 2.
–
Screw on the throat plate 3.
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