Pfaff 939 U - Safety; 1.01 Regulations; 1.02 General Safety Notes; 1.03 Safety Symbols

Index
Contents ..................................................................................Page
1 Adjustment ........................................................................................................................... 5
1.01 Tools, gauges and other accessories for adjusting ................................................................ 5
1.02 Abbreviations ......................................................................................................................... 5
1.03 Explanation of the symbols .................................................................................................... 5
1.04 Check and adjustment aid ...................................................................................................... 6
1.05 Adjusting the basic machine .................................................................................................. 7
1.05.01 Balancing weight .................................................................................................................... 7
1.05.02 Centering the needle in the needle hole (in sewing direction) ............................................... 8
1.05.03 Parallel guiding of the needle bar ........................................................................................... 9
1.05.04 Locking lever ........................................................................................................................ 10
1.05.05 Zero stitch and zigzag stitch scale ........................................................................................ 11
1.05.06 Centering the needle in the needle hole (crosswise to sewing direction) ........................... 12
1.05.07 Zigzag stitch width ............................................................................................................... 13
1.05.08 Multi-stitch movement (only on the PFAFF 939U) ............................................................... 14
1.05.09 Zigzag stitch movement (only on the PFAFF 3704-2/..) ........................................................ 15
1.05.10 Needle penetration symmetry - left, centre and right (only on the PFAFF 3704-2/..) ........... 16
1.05.11 Zigzag movement (only on the 939U) .................................................................................. 17
1.05.12 Target positioning sensor (only on the 939U) ...................................................................... 18
1.05.13 Needle position adjustment lever ........................................................................................19
1.05.14 Adjustment wheels for differential feed (only on the PFAFF 939U) ..................................... 20
1.05.15 Zeroing the differentiatio (only on the PFAFF 939 U) ........................................................... 21
1.05.16 Differential feed synchronisation (only on the PFAFF 3704-2/..) ........................................... 22
1.05.17 Position of the stitch length adjustment wheel (on the PFAFF 939 U) ................................23
1.05.18 Position of the stitch length adjustment wheel (on the PFAFF 3704-2/..) ............................ 24
1.05.19 Zeroing the main feed (rear feed dog) on the PFAFF 939 U................................................. 25
1.05.20 Zeroing the main feed (rear feed dog) on the PFAFF 3704-2/.. ............................................ 26
1.05.21 Zeroing the differential feed (front feed dog) on the PFAFF 939 U ...................................... 27
1.05.22 Zeroing the differential feed (front feed dog) on the PFAFF 3704-2/.. .................................. 28
1.05.23 Torsion spring of the reverse feed lever (on the PFAFF 939 U) ............................................ 29
1.05.24 Torsion spring of the reverse feed lever (on the PFAFF 3704-2/..) ....................................... 30
1.05.25 Torsion spring of the differentiation regulating shaft (on the PFAFF 939 U) ......................... 31
1.05.26 Torsion spring of the differentiation regulating shaft (on the PFAFF 3704-2/..) .................... 32
1.05.27 Feeding motion of the main and differential feeds .............................................................. 33
1.05.28 Lifting stroke of the main and differential feed dogs ............................................................ 34
1.05.29 Height of the main and differential feed dogs ...................................................................... 35
1.05.30 Drive belt in the gearbox housing ........................................................................................ 36
1.05.31 Hook bearing bracket .......................................................................................................... 37