Pfaff 421E1 - Positioning the Needle in the Direction of Sewing

Adjustment
13.04.03 Positioning the needle in the direction of sewing
Requirement
With the stitch length set at " 5 ", the needle must be the same distance from the inner
edges of the needle hole in both its front and rear points of reversal.
1
4
5
6
=
=
2
3
Fig. 13 - 02
● Turn the machine on and set the stitch length at " 5 ".
● Turn the machine off and back on again (synchronisation of the needle bar to the stitch
length).
● Turn the handwheel in its direction of rotation until the needle is in the needle hole.
● Check the requirement by turning the single start bartack on and back off again.
● Turn the machine off.
● For the adjustment, loosen screw 1 through the hole in the back of the housing.
● Loosen screw 2 and nut 3.
● Pass the adjustment pin (part no. 61-111 641-46) through the longitudinal opening on the
back of the housing and then through the hole in lever 4 and into hole 5.
● Move the needle bar frame 6 (screw 1) in accordance with the requirement.
Screw 2 and nut 3 remain loosened for the following adjustment.
● Carry out a check in accordance with the requirement.
13 - 5