Instruction manual

9. Maintenance
9.1 Cleaning and testing
Caution: danger of injury!
Turnthemainswitchoff.
Maintenance work on the sewing machine must only be carried out
when the machine is switched off.
All maintenance work must be carried out before o r at the maintenance
intervals defined in the table (check the “operational hours” column).
When w orking w ith materials that are thick and fibrous, shorter
maintenance intervals may be required.
A clean machine is a trouble-free machine.
Maintenance w ork Explanation Operating interval
to perform (hours)
Machine head
- Remove sewing dust and
residual thread. (for example,
with compressed air)
Points to be particularly well cleaned:
- Area below and around the s titch plate, feed
dog (2), and top roller.
- Area around the hook (7)
- Bobbin housing (1)
- Thread trimmer
- Area around the needle
CAUTION!
Be sure to hold the compressed air cleaner so
that no sewing dust is blown into the oil
collector.
8
- Remove sewing dust and
residual thread.
(for, example with
compressed air)
Take off s titch plate, thread trim blade (4) and
hook plunger ring (6). Remove the bobbin
housing (5) from the hook. Clean the inner
area of the hook. Clean the bobbin housing.
In particular, look for residual adhesive on the
surface (1).
20
- Check the hook. Check the play on the track between bobbin
housing (5) and the hook (7).
500
28
3
2
7
6
1
5
4
8
9