Pfaff hobbylock 4870 Owner's Manual - Page 81

the needles

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- Changing the lower knife Switch main switch off To remove: Set the seam width adjust ing knob (17) to 3. Remove the sewing foot as well as the needle plate (see page 30, 31). Raise the needles to their high est position and disengage the upper knife (see page 32). Undo the lower knife retaining screw (47) with the large screwdriver from the accessories (see page 66) and remove the screw, pressure plate and lower knife. To insert: Slide the new lower knife (48) between the lower knife holder and the upper knife. Place the pressure plate on the hole in the lower knife so that the longer part with the slanted corner is pointing backwards to the machine. Secure the lower knife and the pressure plate with the retaining screw. Insert the needle plate. Bring the cutting edge of the lower knife to the same level as the needle plate. Now tighten up the retain ing screw. 79

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Changing
the
lower
knife
Switch
main
switch
off
To
remove:
Set
the
seam
width
adjust
ing
knob
(17)
to
3.
Remove
the
sewing
foot
as
well
as
the
needle
plate
(see
page
30,
31).
Raise
the needles
to
their
high
est
position
and
disengage
the
upper
knife
(see
page
32).
Undo
the
lower
knife
retaining
screw
(47)
with
the
large
screwdriver
from
the
accessories
(see
page
66)
and
remove
the
screw,
pressure
plate
and
lower
knife.
To
insert:
Slide
the
new
lower
knife
(48)
between
the
lower
knife
holder
and
the
upper
knife.
Place
the
pressure
plate
on
the
hole
in
the
lower
knife
so
that
the
longer
part
with
the
slanted
corner
is
pointing
backwards
to
the
machine.
Secure
the
lower
knife
and
the
pressure
plate
with
the
retaining
screw.
Insert
the
needle
plate.
Bring
the
cutting
edge
of
the
lower
knife
to
the
same
level
as
the
needle
plate.
Now
tighten
up
the
retain
ing
screw.
79