Contents

 

Contents .................................................................................

Chapter – Page

12.05.10

Needle position adjustment lever ................................................................................

12

- 12

12.05.11

Zero position of the bottom feed dog (with closed gear box) ......................................

12

- 13

12.05.12

Zeroing the bottom feed (with open gearbox) .............................................................

12

- 14

12.05.13

Feeding motion of the bottom feed dog .....................................................................

12

- 15

12.05.14

Lifting motion of the bottom feed dog ........................................................................

12

- 16

12.05.15

Drive belt in the gearbox housing ................................................................................

12

- 17

12.05.16

Hook bearing bracket ..................................................................................................

12

- 18

12.05.17

Hook lubrication ..........................................................................................................

12

- 19

12.05.18

Pre-adjusting the needle height ...................................................................................

12

- 20

12.05.19

Needle rise, hook-to-needle clearance and bobbin case positioning-finger ..................

12

- 21

12.05.20

Final adjustment of the needle height .........................................................................

12

- 22

12.05.21

Bobbin case opener position .......................................................................................

12

- 23

12.05.22

Bobbin case opener motion ........................................................................................

12

- 24

12.05.23

Bottom feed dog height ..............................................................................................

12

- 25

12.05.24

Presser foot to needle plate clearance ........................................................................

12

- 26

12.05.25

Needle thread tension release (on machines without -900/24)....................................

12

- 27

12.05.26

Presser foot pressure .................................................................................................

12

- 28

12.05.27

Thread diverter pin ......................................................................................................

12

- 29

12.05.28

Limiting the knee lever stroke .....................................................................................

12

- 30

12.05.29

Knee lever play ............................................................................................................

12

- 31

12.05.30

Bobbin winder .............................................................................................................

12

- 32

12.06

Adjusting the underedge trimmer -771/04 ...................................................................

12

- 33

12.06.01

Resting position of the knife .......................................................................................

12

- 33

12.06.02

Knife height .................................................................................................................

12

- 34

12.06.03

Positioning of the knife ...............................................................................................

12

- 35

12.06.04

Knife drive switch .......................................................................................................

12

- 36

12.06.05

Workpiece guard .........................................................................................................

12

- 37

12.07

Adjusting the thread trimmer -900/24 .........................................................................

12

- 38

12.07.01

Axial position of the control cam .................................................................................

12

- 38

12.07.02

Preliminary adjustment of the control cam .................................................................

12

- 39

12.07.03

Position of the thread catcher and cutting test ...........................................................

12

- 40

12.07.04

Readjustment of the control cam ................................................................................

12

- 41

12.07.05

Needle thread tension release ....................................................................................

12

- 42

12.08

Parameter settings ......................................................................................................

12

- 43

12.08.01

Selecting the user level ...............................................................................................

12

- 43

12.08.02

Example of a parameter input .....................................................................................

12

- 44

12.08.03

List of parameters .......................................................................................................

12

- 45

12.09

Reset / Cold start ........................................................................................................

12

- 46

12.10

Explanation of the error signals ...................................................................................

12

- 47

12.11

Internet update of the machine software ....................................................................

12

- 48

13

Wearing parts ............................................................................................................

13 -

1

14

Circuit diagrams ........................................................................................................

14

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1