Pfaff coverlock 4772 Owner's Manual - Page 61
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Changing the lower blade Switch off the electrical power To remove: Detach the trimming waste box and open the looper cover. Disengage the upper blade and move the needle(s) to the highest position. Use the large screwdriver from the accessories to loosen lower blade retaining screw A. Remove the screw and the lower blade. To insert: Insert a new lower blade into the recess provided and tighten the retaining screw. Engage the upper blade and close the looper cover. 57
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Changing
the
lower
blade
Switch
off
the
electrical
power
To
remove:
Detach
the
trimming
waste
box
and
open
the
looper
cover.
Disengage
the
upper
blade
and move
the
needle(s)
to
the
highest
position.
Use
the
large
screwdriver
from
the
accessories
to
loosen
lower
blade
retaining
screw
A.
Remove
the
screw
and
the
lower
blade.
To
insert:
Insert
a
new
lower
blade
into
the
recess
provided
and
tighten
the
retaining
screw.
Engage
the
upper
blade
and
close
the
looper
cover.
57