Upper Blade, Changing - Pfaff hobbylock 4752 Instruction Manual

blocking pin
0,5 - 1 mm (1/32")
lower blade
hexagon-
head screw
blocking pin
40
lower
blade
hexagon-
head screw
upper blade
upper blade
Changing the upper blade
Switch the main switch to OFF.
Open the looper cover and the swivel plate.
Move the upper blade to its lower position
(see Page 24).
Undo the hexagon-head screw of the upper
blade and remove the upper blade.
Insert the new upper blade into the blade
holder in such a way that the blocking pin
engages in the groove. Tighten the hexagon-
head screw slightly.
Move the upper blade to its upper position.
Turn the handwheel towards you until the
upper blade has reached its lowest position.
Undo the hexagon-head screw and adjust
the position of the upper blade so that the
edges of the upper blade and of the lower
blade overlap by about 0.5 to 1 mm (1/32")
(see illustration). Tighten the hexagon-head
screw.
– Close the looper cover and the swivel
plate.