Contents - Pfaff 422 Instruction Manual

Contents

Contents ............................................................................... Chapter - Page
8
.03 Switching the machine on/off .................................................................................... 8 - 5
9
Setting up ................................................................................................................. 9 - 1
9
.01 Inserting the needle ................................................................................................... 9 - 1
9
.02 Winding the bobbin thread, regulating the winder tension ........................................ 9 - 2
9
.03 Removing and inserting the bobbin case ................................................................... 9 - 3
9
.04 Threading the bobbin case and adjusting the bobbin thread tension ......................... 9 - 3
9
.05 Threading needle threads and regulating tensions ..................................................... 9 - 4
10
Care and maintenance ........................................................................................... 10 - 1
10
.01 Cleaning the hook areas and the hooks ................................................................... 10 - 1
10
.02 Oiling the hook ......................................................................................................... 10 - 2
10
.03 Checking/adjusting the air pressure ......................................................................... 10 - 3
10
.04 Cleaning the air filter of the air-filter/lubricator ......................................................... 10 - 3
11
Adjustment ............................................................................................................. 11 - 1
11
.01 Notes on adjustment ............................................................................................... 11 - 1
11
.02 Tools, gauges and other equipment ......................................................................... 11 - 1
11
.03 Abbreviations ........................................................................................................... 11 - 1
11
.04 Adjusting the basic machine ................................................................................. 11 - 2
11
.04.01 Adjusting the synchronizer ....................................................................................... 11 - 2
11
.04.02 Balance weight ........................................................................................................ 11 - 3
11
.04.03 Positioning the feed dog in the needle plate cutout ................................................. 11 - 4
11
.04.04 Neutral position of the feed dog .............................................................................. 11 - 5
11
.04.05 Feeding stroke of feed dog ...................................................................................... 11 - 6
11
.04.06 Lifting stroke of feed dog ......................................................................................... 11 - 7
11
.04.07 Feed dog height ....................................................................................................... 11 - 8
11
.04.08 Needles in needle-hole centre ................................................................................. 11 - 9
11
.04.09 Needle height (preliminary adjustment) ................................................................... 11 - 10
11
.04.10 Needle rise, hook-to-needle clearance, needle height (final adjustment)
and needle guard ..................................................................................................... 11 - 11
11
.04.11 Bobbin case opener stroke ...................................................................................... 11 - 13
11
.04.12 Re-engaging the slip-clutch ...................................................................................... 11 -14
11
.04.13 Clearance between presser foot and needle plate................................................... 11 - 15
11
.04.14 Knee lever ................................................................................................................ 11 - 16
11
.04.15 Needle thread tension release (on machines without Subclass -900/81) ................. 11 -17
11
.04.16 Needle thread tension release (on machines with Subclass -900/81) ...................... 11 - 18
11
.04.17 Bobbin winder .......................................................................................................... 11 - 19
11
.04.18 Presser foot pressure .............................................................................................. 11 - 20
11
.04.19 Thread check spring and thread regulator ................................................................ 11 - 21
11
.05 Adjusting the thread trimmer 900/81 .................................................................... 11 - 22
11
.05.01 Resting position of roller lever/radial position of control cam ................................... 11 - 22
11
.05.02 Thread-catcher height .............................................................................................. 11 - 23
11
.05.03 Thread catcher position ............................................................................................ 11 - 24