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Index

Contents ..................................................................................Page

1 Adjustment ......................................................................................................................... 4

1.01 Notes on adjustment ............................................................................................................. 4

1.02 Tools, gauges and other accessories for adjusting ............................................................... 4

1.03 Abbreviations ......................................................................................................................... 4

1.04 Explanation of the symbols .................................................................................................... 4

1.05 Checking and adjusting aid .................................................................................................... 5

1.06 Adjusting the basic machine .................................................................................................. 6

1.06.01 Balancing weight .................................................................................................................... 6

1.06.02 Needle in needle-hole centre ................................................................................................. 7

1.06.03 Neutral position of drop feed ( Adjustment with the gearcase closed ................................... 8

1.06.04 Adjustment with the gearcase opened .................................................................................. 9

1.06.05 Actuating lever under the reverse-feed control .................................................................... 10

1.06.06 Feeding motion of drop feed ................................................................................................ 11

1.06.07 Lifting motion of drop feed .................................................................................................. 12

1.06.08 Height of drop feed dog ....................................................................................................... 13

1.06.09 Clearance between presser foot and needle plate ............................................................. 14

1.06.10 Top feed actuating link ......................................................................................................... 15

1.06.11 Neutral position of top feed ................................................................................................. 16

1.06.12 Feeding motion of the top feed dog .................................................................................... 18

1.06.13 Vibrating presser clearance .................................................................................................. 19

1.06.14 Top feed lifting motion ......................................................................................................... 20

1.06.15 Position of lifting presser ..................................................................................................... 21

1.06.16 Synchronizing the top feed .................................................................................................. 22

1.06.17 Stitch length alignment ........................................................................................................ 23

1.06.18 Eccentric hook shaft bearing and hook-to-needle clearance ................................................ 24

1.06.19 Final adjustment of needle rise, needle height, and bobbin case position ﬁ nger ..................25

1.06.20 Bobbin case opener height .................................................................................................. 26

1.06.21 Adjustment of the bobbin opener ........................................................................................ 27

1.06.22 Bobbin case opener motion ................................................................................................. 28

1.06.23 Needle thread tension release ............................................................................................. 29

1.06.24 Thread check spring and thread regulator ............................................................................ 30

1.06.25 Bobbin winder ...................................................................................................................... 31

1.06.26 Knee lever resting position .................................................................................................. 32

1.06.27 Knee lever play ..................................................................................................................... 33

1.06.28 Knee lever stroke limitation ................................................................................................. 34

1.06.29 Position of vibrating presser in relation to lifting presser ..................................................... 35

1.06.30 Pressure of the vibrating- and lifting pressers ...................................................................... 36

1.06.31 Stitch length limitation ......................................................................................................... 37

1.07 Parameter settings (only on machines with EcoDrive and control unit P40 ED) .................. 38

1.07.01 Parameter list ....................................................................................................................... 38

2 Circuit diagrams ................................................................................................................ 39

Brand	Pfaff
Model	487
Category	Sewing Machine
Language	English

Pfaff 487 Adjustment Manual

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