Pfaff 491 User Manual

Index
Contents ..................................................................................Chapter - Page
8.03 Switching the machine on / off ...................................................................................... 8 - 5
9 Setting up..................................................................................................................... 9- 1
9.01 Inserting the needle on model 471 and 491.................................................................... 9 - 1
9.02 Inserting the needle on model 474 ................................................................................. 9 - 2
9.03 Winding the bobbin thread; adjusting the primary thread tension ................................... 9 - 3
9.04 Removing / Inserting the bobbin case............................................................................ 9 - 4
9.05 Threading the bobbin case / Adjusting the bobbin thread tension ................................... 9 - 4
9.06 Threading the needle thread and regulating its tension on model 471/491 ...................... 9 - 5
9.07 Threading the needle thread and regulating its tension on model 474 ............................. 9 - 6
9.08 Setting the stitch length ................................................................................................. 9 - 7
10 Care and maintenance................................................................................................10 - 1
10.01 Cleaning .......................................................................................................................10 - 1
10.02 Oiling the hook .............................................................................................................10 - 2
10.03 Filling the oil reservoir of the thread lubrication unit.......................................................10 - 3
10.04 Lubricating the bevel gears...........................................................................................10 - 3
10.05 Checking / adjusting the air pressure ............................................................................10 - 4
10.06 Cleaning the air filter of the air-filter / lubricator .............................................................10 - 4
11 Adjustment ..................................................................................................................11 - 1
11.01 Notes on adjustment ....................................................................................................11 - 1
11.02 Tools, gauges and other accessories............................................................................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 Needle position in sewing direction on the PFAFF 471 and 491.....................................11 - 3
11.04.03 Needle position in sewing direction on the PFAFF 474 ..................................................11 - 4
11.04.04 Preliminary adjustment of the needle height .................................................................11 - 5
11.04.05 Needle rise, hook clearance, needle height and needle guard on the PFAFF 471...........11 - 6
11.04.06 Needle rise, hook clearance, needle height and needle guard on the PFAFF 474...........11 - 8
11.04.07 Needle rise, hook clearance, needle height and needle guard on the PFAFF 491...........11 - 10
11.04.08 Needle position crosswise to sewing direction on the PFAFF 471.................................11 - 12
11.04.09 Needle position crosswise to sewing direction on the PFAFF 474.................................11 - 13
11.04.10 Needle position crosswise to sewing direction on the PFAFF 491.................................11 - 14
11.04.11 Height of the bobbin-case opener..................................................................................11 - 15
11.04.12 Bobbin-case opener stroke ........................................................................................... 11 - 16
11.04.13 Height of the feed wheel on the PFAFF 471 ..................................................................11 -17
11.04.14 Height of the feed wheel on the PFAFF 474 ..................................................................11 - 18
11.04.15 Height of the feed wheel on the PFAFF 491 ..................................................................11 - 19
11.04.16 Stitch length control eccentric .......................................................................................11 -20
11.04.17 Stitch length scale disk.................................................................................................11 - 21
11.04.18 Shaft crank to feed wheel drive ....................................................................................11 - 22
11.04.19 Shaft crank to roller presser drive .................................................................................11 - 23
11.04.20 Clearance between roller presser and feed wheel.........................................................11 - 24
11.04.21 Roller presser ...............................................................................................................11 - 25
11.04.22 Stitch length on stitch length scale ...............................................................................11 - 26
11.04.23 Synchronization of roller presser and feed wheel ..........................................................11 - 27
11.04.24 Retainer (only on model 474) ........................................................................................11 - 28
11.04.25 Knee lever ....................................................................................................................11 - 29

Pfaff 491 Specifications

General

Brand	Pfaff
Model	491
Category	Sewing Machine
Language	English