Contents

 

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

Chapter – Page

8.05

Commissioning .............................................................................................................

8

-

5

8.06

Switching the machine on/off .......................................................................................

8

-

5

8.07

Basic setting of the machine drive unit (only on machines with Quick-flange motor)

... 8

-

6

8.08

Mounting/connecting the start inhibitor (only on machines with Quick-flange motor)

... 8

-

8

9

Setting up ....................................................................................................................

9

-

1

9.01

Inserting the needle ......................................................................................................

9

-

1

9.02

Winding the bobbin thread; adjusting the primary thread tension .................................

9

-

2

9.03

Removing/inserting the bobbin case .............................................................................

9

-

3

9.04

Threading the bobbin case, adjusting the thread tension ..............................................

9

-

3

9.04.01

PFAFF 938 without thread trimmer ...............................................................................

9

-

3

9.04.02

PFAFF 938 with thread trimmer ....................................................................................

9

-

4

9.04.03

PFAFF 918 ....................................................................................................................

9

-

4

9.05

Threading the needle thread / Adjusting the needle thread tension ..............................

9

-

5

9.06

Setting the zigzag stitch and the stitch position ............................................................

9

-

6

9.07

Adjusting the stitch length ............................................................................................

9

-

6

9.08

Entering the start and end backtacks ............................................................................

9

-

7

10

Sewing .......................................................................................................................

10

-

1

10.01

Darning program .........................................................................................................

10

-

2

10.02

Counted seam .............................................................................................................

10

-

2

10.03

Error messages ...........................................................................................................

10

-

3

11

Care and maintenance ..............................................................................................

11

-

1

11.01

Cleaning ......................................................................................................................

11

-

1

11.02

Lubricating the hook ....................................................................................................

11

-

2

11.03

Oiling the zigzag drive .................................................................................................

11

-

3

11.04

Cleaning the air filter of the air-filter / lubricator ...........................................................

11

-

4

11.05

Checking/adjusting the air pressure ............................................................................

11

-

4

12

Adjustment ................................................................................................................

12

-

1

12.01

Notes on adjustment ...................................................................................................

12

-

1

12.02

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

12

-

1

12.03

Abbreviations ..............................................................................................................

12

-

1

12.04

Check and adjustment aid ...........................................................................................

12

-

2

12.05

Adjusting the basic machine .......................................................................................

12

-

3

12.05.01

Balancing weight .........................................................................................................

12

-

3

12.05.02

Centering the needle in the needle hole (in sewing direction) .....................................

12

-

4

12.05.03

Parallel guiding of the needle bar ................................................................................

12

-

5

12.05.04

Locking lever ...............................................................................................................

12

-

6

12.05.05

Zero stitch and zigzag stitch scale ...............................................................................

12

-

7

12.05.06

Centering the needle in the needle hole (crosswise to sewing direction)....................

12

-

8

12.05.07

Zigzag stitch width ......................................................................................................

12

-

9

12.05.08

Zigzag stitch movement ..............................................................................................

12

- 10

12.05.09

Needle penetration symmetry (left, centre and right) ..................................................

12

- 11