Pfaff creative 7550 Service Manual page 15

4a. Feed dog height
Requirement:
In the highest position of the
face by 0 85 to 0.9 mm
The tolerance must not remain under or exceed 0.85 to 0.9 mm.
Check:
•
Remove the needle.
e Remove the sewing fool
e Switch on the master switch.
• ·oo·
Set stitch pattern
e Place pointer gauge 63-114690-23 on the needle plate
plate just right of the cutout (fig. 4a).
e Turn the hexagon with a 6 mm spanner (wrench) slightly until pointer 26 Is exactly at "0".
•
Move the gauge to the left to set feeler
e Turn the handwheel until pointer 26 has moved up to
The pointer must now point exactly at mark 0.9.
Adjuatrnent:
•
Leave the pointer gauge on the needle plate.
e Remove baseplate and bobbin thread monitor,
e Turn the handwheel until the feed dog Is In
•
screw 24 by just 1/8 of a turn
Loosen
e Turn eccentric stud 25 until the eccentric Is facing the rear part of the housing (basic position).
e Turn eccentric stud 25 counter-clockwise until pointer 26 is exactly at mark 0.9 (fig. 4b).
e Tighten screw 24 {fig. 4c).
Cron-check:
e Turn the handwheel until pointer 26 Is In its highest position again. The pointer must nov
(fig.
mark
at 0.9. 4b).
• feed
Lower the dog and check the function.
14
feed dog,
the points of its
(fig
4 ).
and stltch length "6.0".
lever
its
{fig. 4c).
teeth
must protrude above the needle plate
so that feeler lever 27 rests on the needle
27 on the feed dog (fig. 4b).
its
highest position.
but all
leave electrical connections in place.
highest working position.
sur­
be