Pfaff 481 Service Manual

20, PFAFF 19 14 Clearance between presser foot and needle plate Requirement With presser bar lifter 1 raised there must be a clearance of 5 mm between presser foot and needle plate. Note: When the presser foot is raised to its top position upon actuating the knee lever fully or by me…

23, Pfaff 481 22 PFAFF 17 Thread check spring and thread regulator Requirement 1. Thread check spring 3 must have moved by its full stroke by the time the point of the needle enters the material (stroke approx. 7 mm). 2. Thread regulator 4 must be fixed in the elongated hole so that thread check spring 3 move…

3, 3 PFAFF Notes on safety ●The machine must only be operated in full knowledge of the instruction book and by persons with appropriate training. ●Before commissioning the machine also read the motor manufacturer’s safety notes and instruction manual. ●The machine must only be used for the purp…

21, 20 PFAFF 15 Eliminating feed differences (Adjustment not applicable to PFAFF 483) Requirement With the machine set for its longest stitch, both the feed dog and and the needle must make feed strokes of the same length when the handwheel is turned. ● Shift hinge stud 1 (nut 2) to adjust …

4, PFAFF 3 Adjustment hole 1 = 0.6 mm past top dead center of the needle bar (0.6 past t.d.c.). Adjustment hole 3 = 0.6 mm past the bottom dead center of the needle bar (0.6 past b.d.c). Adjustment hole 4 = 1.8 mm past the bottom dead center of the needle bar (needle rise position). Adju…

18, PFAFF 17 12 Position of bobbin case opener Requirement 1. Small hook (481 and 483) With bobbin case opener 3 in its left point of reversal there must be a clearance of approx. 0.8 mm between the front edge of the bobbin case opener finger and the edge of bo…