11 - 1
Adjustment
11 Adjustment
The illustrations in this chapter show the single-needle machine,
PFAFF 1525-900/81. For the two-needle machine, PFAFF 1526, various
adjustments have to be made twice, i.e. on the left- and right-hand sewing
hooks. This is pointed out in the chapters concerned, and some of the
illustrations have to be regarded in reverse.
11.01 Tools, gauges and other equipment
● Set of screwdrivers with 2 to 10 mm blade widths
● Set of open-ended spanners/wrenches, 7 to 14 mm across flats
● Set of allen keys from 2 to 6 mm
● Needle rise gauge (Part No. 61-111 600-01)
● Screw clamp (Part No. 61-111 600-35/001)
● 7.0 mm gauge for presser-foot height (part No. 61-111 633-61)
● 5.0 mm gauge for top feed stroke (part No. 61-111 633-60)
● Metal rule (part No. 08-880 218-00)
● Needles, System 134-35
● Sewing thread and test material
11.02 Notes on adjustment
● All adjustments in these adjustment instructions are based on a fully assembled
machine.
● Machine covers that have to be removed and replaced to carry out checks and
adjustments are not mentioned in the text.
● Screws, nuts and other means of fixation for machine parts indicated in the text in
brackets ( ) are to be loosened before the adjustment and tightened again afterwards.
11.03 Abbreviations
t.d.c. = top dead centre
b.d.c. = bottom dead centre
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