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12. Care
After each use, remove any pieces of thread,
material, and fluff. Only in this way will you
ensure that the sewing machine continues to
work correctly and lasts for a long time.
Warning:
Make sure that the sewing machine is switched
off and the plug has been pulled out of the
socket to prevent accidents caused by uninten-
tional switching on.
a) Clean the gripper area
Important!
Never disassemble the mechanical elements
in the gripper area! Extensive experience with
mechanical devices is required in order to
reassemble these.
Only Customer Service has the special equipment
necessary for disassembling the gripper mecha-
nisms. If you carry out repair work yourself, the
warranty will automatically be voided. It should
be enough for the user just to clean this area
with a brush or vacuum cleaner.
• Turn the handwheel
s
in an anti-clockwise
direction to fully raise the needle.
• Then open the gripper cover
“
• and take out the bobbin case
l
.
• Now remove all dirt with a brush or vacuum
cleaner (with fine brush attachment).
b) Clean the feeder
• Remove the needle and
• Take the needle retainer
;
off, as described
in Chapter 9.
• Loosen the screws inserted in the stitch
plate
2!
and dismantle the stitch plate.
Now remove the front cover
q
, if necessary,
to better reach the screws. You can now
clean the feeder.
Lervia KH 4000
l
“
“
;
