Pfaff Industrial 337 Guide

ADJUSTMENT MANUAL
296-12-18 644/002
Justieranleitung engl. 06.09
This Adjustment Manual is valid for machines
from the following serial numbers onwards:
# 7 207 686
337

The reprinting, copying or translation of PFAFF Service Manuals, whether in whole or in part,
is only permitted with our previous authorization and with written reference to the source.
PFAFF Industriesysteme
und Maschinen AG
Hans-Geiger-Str. 12 - IG Nord
D-67661 Kaiserslautern

Adjustment
11 - 1
11 Adjustment
11.01 Notes on adjustment
All adjustments in this instruction manual refer to a completely assembled machine and
must only be carried out by appropriately trained technical personnelappropriately trained technical personnel
appropriately trained technical personnelappropriately trained technical personnel
appropriately trained technical personnel. Machine covers
that have to be removed and replaced for checks and adjustment work are not mentioned in
the text.
The screws and nuts indicated in brackets () are for the fixation of machine parts that have to
be unscrewed before adjustment and tightened again afterwards.
11.02 Tools, gauges and other equipment for adjusting
●Screwdrivers with blade widths from 2 to 10 mm
●Spanners (wrenches) in sizes from 7 to 14 mm
●Allen keys from 2 to 6 mm
●Metal rule (part No. 08-880218-00)
●Needle-rise gauge (part No. 61-111600-01)
●Screw clamp (part No. 61-111600-35/001)
●Gauge, 7-mm, for lifting presser stroke (part No. 61-11163 0-14)
●Needles, system 134-35
●Sewing thread and material for stitching off
11.03 Abbreviations
t.d.c. = top dead centre
b.d.c. = bottom dead centre

Adjustment
11 - 2
●Re-position feed dog 1(screws 2) according to Requirement.
Fig. 11 - 01
11.04 Adjusting the basic machine
11.04.01 Position of the bottom feed dog crosswise to sewing direction
Requirement
The bottom feed dog 1must clear the feed slot by the same amount at the left and right.
2
1
xx

Adjustment
11 - 3
11.04.02 Adjusting the bottom feed dog in sewing direction
Requirement
With the longest stitch length set, bottom feed dog 5must clear the feed slot by the
same amount at the front and rear end of its stroke.
Fig. 11 - 02
●Set the longest stitch length.
●Position clamp sleeve 1(screws 2and 3) on the flat of shaft 4as far to the left as
possible, making sure that screw 2is still on the flat.
●Position feed dog 5(screws 6) according to Requirement.
2
1
3
4
6
5
x
x