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13.3 Control 1 6 3 2 Caution: Danger of Injury ! Turn the main switch off. The maintenance of the automatic buttonholer must only be carried out with the machine switched off! ATTENTION ! If the automatic buttonholer has not been used for a long time or after assembling the machine, oil the wicks, felts, looper and needle bar components (see Installation Instructions chapter 10). Maintenance work to be done Automatic buttonholer Clean the area under the needle plate of sewing dust Check the oil level Check and clean the toothed belts Oil the punch 1 Oil the clamp arms 3 and the felts 2 Oil the felt 6 on the cam disc Pneumatic system Check the water level in the pressure regulator Clean the filter insert in the maintenance unit Check the system for leaks 34 Operating hours 8 40 160 500 X X X X X X X X X
