8. Maintenance
Caution: danger of injury
Turn off the main switch!
Maintenance work may only be carried out on the sewing
machine 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.
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