Pfaff coverstyle 4850 Owner's Manual - Page 63
Changing the upper blade, Turn off the electrical power, To insert
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Changing the upper blade Turn off the electrical power To remove: Set the adjusting knob for seam width to 3.5 mm. Fasten the upper blade (see page 39) before loosening the fastening screw (A) with the wrench provided in the accessory box. Then remove the upper blade. To insert: Attach the new upper blade and gently tighten the fastening screw. Then turn the handwheel until the upper blade is in the lowest position. In this position the front edge of the upper blade must be 0.5 to 1.0 mm lower than the cutting edge of the lower blade. When the upper blade has been properly inserted you can fully tighten the fastening screw. Loosen the screw to the movable upper blade. 59
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59
Changing the upper blade
Turn off the electrical power
To remove: Set the adjusting knob for seam
width to 3.5 mm. Fasten the upper blade (see
page 39) before loosening the fastening screw
(A)
with the wrench provided in the accessory
box. Then remove the upper blade.
To insert:
Attach the new upper blade and
gently tighten the fastening screw. Then turn
the handwheel until the upper blade is in the
lowest position.
In this position the front edge of the upper
blade must be
0.5
to
1.0 mm lower
than the
cut-
ting edge
of the lower blade. When the upper
blade has been properly inserted you can fully
tighten the fastening screw. Loosen the screw to
the movable upper blade.