10 Maintenance
10.1 Cleaning and testing
Caution: danger of injury !
Tur n off t he main switch.
Maintenance may only be carried out with the machine 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.
A clean machine is a trouble-free machine.
Caution: danger of injury !
Tur n off the main switch before tilting the sewing machine head!
Maintenance work Explanation Operating
to be carried out hours
Machine head
- Remove lint, pieces of thread
and other debris (e.g. with
an air blow gun)
Places in special need of cleaning:
- area under the throat plate 2
- feeders
- area around the hook 1
- bobbin housing
- thread trimmer
- needle area
CAUTION !
Hold the air blow gun in a way that the lint
is not blown into the oil collector
8
Direct drive
Cl e a n f an g r i l l e 3. (e.g. with an
air blow gun)
Remove lint and pieces of thread from
air-intake openings.
8
65
GB
21
3
Keystone Sewing Machine Company, Inc.
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