Contents
Contents ................................................................................. Chapter - Page
13.
05 Adjusting the basic machine ....................................................................................... 13 - 3
13.05.01 Basic position of the machine ..................................................................................... 13 - 3
13.05.02 Position of needle to needle hole ................................................................................ 13 - 4
13.05.03 Pre-adjusting the needle height................................................................................... 13 - 5
13.05.04 Neutral position of the main feed dog ......................................................................... 13 - 6
13.05.05 Zero position of the differential feed dog .................................................................... 13 - 7
13.05.06 Feeding motion of main- and differential feed dogs .................................................... 13 - 8
13.05.07 Lifting motion of main- and differential feed dogs....................................................... 13 - 9
13.05.08 Position of main- and differential feed dogs ................................................................ 13 -10
13.05.09 Zero position of feeding presser ................................................................................. 13 -11
13.05.10 Front driving link of feeding-presser drive ................................................................... 13 -12
13.05.11 Positioning the lifting presser...................................................................................... 13 -13
13.05.12 Feeding motion of the top feed dog............................................................................ 13 -15
13.05.13 Lift of feeding presser................................................................................................. 13 -16
13.05.14 Lifting stroke of feeding presser ................................................................................. 13 -17
13.05.15 Stitch length limitation ................................................................................................ 13 -18
13.05.16 Basic setting of the differential adjustment device ..................................................... 13 -19
13.05.17 Looper avoiding motion............................................................................................... 13 -20
13.05.18 Looper height and looper angle (for the 3801-3/07)..................................................... 13 -21
13.05.19 Looper height and looper angle (for the 3801-3/071 and -11/071) ............................... 13 -22
13.05.20 Distance of the looper from the needle (in sewing direction) ...................................... 13 -23
13.05.21 Looper-to-needle clearance (crosswise to sewing direction)....................................... 13 -24
13.05.22 Looper motion............................................................................................................. 13 -25
13.05.23 Final adjustment of the needle height ......................................................................... 13 -26
13.05.24 Height of rear needle guard......................................................................................... 13 -27
13.05.25 Clearance between the rear needle guard and the needle .......................................... 13 -28
13.05.26 The looper-eccentric guard.......................................................................................... 13 -29
13.05.27 Position of the front needle guard ............................................................................... 13 -30
13.05.28 Needle thread puller.................................................................................................... 13 -31
13.05.29 Basic setting of the needle thread regulator and the thread guide.............................. 13 -32
13.05.30 Looper thread regulators............................................................................................. 13 -33
13.05.31 Looper thread puller .................................................................................................... 13 -34
13.05.32 Top feed and presser foot pressure ............................................................................ 13 -35
13.06 Adjusting the thread trimmer ...................................................................................... 13 -36
Only on the PFAFF 3801-3/071 and –11/071. .............................................................. 13 -36
13.06.01 Preadjusting the thread catcher .................................................................................. 13 -36
13.06.02 Ball pin position ........................................................................................................... 13 -37
13.06.03 Thread catcher position with respect to needle .......................................................... 13 -38
13.06.04 Thread catcher guard .................................................................................................. 13 -39
13.06.05 Tension release........................................................................................................... 13 -40
13.06.06 Trimmer test ...............................................................................................................13-41
13.07 Adjusting the tape feeding device ............................................................................... 13 -42
13.07.01 Adjusting the knife ...................................................................................................... 13-42
13.07.02 Setting the evaluation function of the photoelectric beam .......................................... 13 -43
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