6
Adjustment
2 Adjustment
Special attention should be payed to the following
This service manual is valid for the subclasses -900/56 and -900/61 for the PFAFF 440-R;
1440; 420 and 1420 series of machines.
The PFAFF 442-R two needle version is illustrated.
The text refers to the single needle version. Notice of additional adjustments for the two
needle machines are marked as such in the corresponding sections. Deviations in the
illustration have no influence on the adjustments.
2.01 Tools, gauges and other accessories
● Screwdrivers with blade width from 2 to 10 mm
● Wrenches from 7 to 14 mm (across flats)
● Hexagon keys, 1.5 to 6 mm
● Metal rule (Part No. 08-880 218-00)
● Continuity tester
● Sewing thread and test material
● Feeler gauge
2.02 Notes on the adjustments
All adjustments in this manual apply to the fully assembled machine. Machine covers which
have to be removed and re-fitted for checks and adjustments are not mentioned in the text.
Screws or nuts in brackets ( ) must be loosened before an adjustment and tightened again
afterwards.
2.03 Abbreviations
t.d.c. = top dead center
b.d.c. = bottom dead center
2.04 Explanation of the symbols
Note, information
Servicing, adjustment
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