Operation Manual

8. Maintenance
Caution - danger of injury
Turn off the main switch.
Maintenance of the sewing machine may only be carried
out when it is switched off.
Maintenance work must be carried out no less frequently than at the intervals given in
the tables (see "operating hours" column).
Maintenance intervals may need to be shorter when processing heavy-shedding
materials.
8.1 Cleaning and testing
A clean sewing machine is a trouble-free sewing machine.
maintenance work explanation operating
to be carried out hours
Upper part of machine
- Remove lint, pieces of
thread and other debris.
- Clean oil collector.
Places in special need of cleaning:
- area under the needle plate
- feeder
- area around the shuttle
- bobbin housing
- thread cutter
- needle-thread tensioner
- Remove lint and oil spills with a cloth
8
8
Sewing drive
- Check the condition and
tension of the V-belt.
It must be possible to depress the V-belt
by about 10 mm by pressing it with a
finger at its mid-point.
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