Pfaff 3822-1/22 - Needle Height and Bobbin Opener Adjustments; Needle Height and Hook Clearance; Bobbin Case Opener Adjustments

34 PFAFF
37 Needle height, needle rise and hook clearance
Requirement: In needle bar position 1.8 mm past b.d.c. (= adjustment hole “4”) the
clearance between needle eye and hook point is 0.8 mm and the max.
clearance between hook point and needle is 0.1 mm
.1 Adjust needle bar (screws 1, Fig. 4).
.2 Adjust hook (screws 2, Fig. 3).
38 Bobbin case opener height
Requirement: When bobbin case opener 3 is at its left reversal point (Fig. 5) the opening
finger and the stop on hook base base 4 (Fig. 6) must be level with each other.
It must be possible to remove the bobbin case without hindrance.
Turn eccentric bearing 5 (screw 6, Fig. 7).