Medion LIFE SM60 Manual De Instrucciones página 237

Remove the looper by holding the pin in the centre of the looper.
Remove all dirt particles from the shuttle track ring of the shuttle track
and oil the parts with a cloth.
Apply one or two drops of oil to the bobbin shuttle track as shown.
Replace the looper by holding the pin in the centre of the looper.
Replace the shuttle track ring.
Turn the snap levers inwards as shown
Finally, reinsert the bobbin case.
TIP
Depending on the frequency of use, this part of the machine is to be oiled
more often.
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