Air Blast Dosage (Only -900/97) - Pfaff 480 Series Service Manual

Adjustment
2

Air blast dosage (only -900/97)

.10
2 - 9
Requirement
When the thread catcher is in reverse motion, the cut-off end of the starting thread
should be blown out of the catcher area.
Fig. 2 - 08
Adjust the air blast in accordance with the requirement by means of throttle 1
(screw 2).
If the air blast is too strong, the needle thread may be blown out of the
catcher area. Hence the needle thread cannot be caught or cut when sewing
is started.
1
2