Pfaff COVERLOCK 4.0 -, Руководство пользователя, Страница: 43 / 48

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Maintenance 41
Machine maintenance
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than a conventional machine mainly for two reasons:
• A lot of lint is produced when the cutters are cutting
the the fabric.
• An overlock runs at a very high speed and needs to be
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Cleaning
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• Open the front cover and remove all the lint using the
lint brush.
• Close the front cover and wipe the exterior surface of
your machine with a soft cloth to remove any dust or
lint built up.
Cleaning the touch screen
Wipe the touch screen with a clean, soft and damp cloth.
Oiling
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the moving parts, pointed out on the picture, must be
lubricated often.
Use supplied sewing machine oil. Do not use any other
oil, it could damage the machine.
Wipe the machine surface to remove all excess oil before
sewing.
Replacing the movable upper cutter
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The movable upper cutter should be changed when it
becomes dull. The upper cutter can be replaced according
to the following directions. If you are having any
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• Open the front cover and set the movable upper cutter
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• Turn the handwheel until the upper cutter holder is in
its lowest position.
• Place a new upper cutter in the groove of the upper
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• Make sure the front edge of the movable upper cutter
is 0.5-1.0 mm lower than the cutting edge of the
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