Adjustment
11 Adjustment
On the PFAFF 937 no c-clamps may be attached to the needle bar as this
would damage the special coating on the needle bar.
11.01 Notes on adjusting
All adjustments in these adjustment instructions are based on a completely assembled
machine and must only be carried out by trained specialists. Covers on the machine which
have to be removed and replaced for checks and adjustment work are not mentioned.
11.02 Tools, gauges and other accessories
● Screwdrivers with blade width from 2 to 10 mm
● Wrenches (spanners) with jaw width from 7 to 14 mm
● Allan keys from 1.5 to 6 mm
● Metal rule, Part No. 08-880 218-00
● Blocking pin (5 mm diameter), Part No. 13-030 341-05
● Vibrating presser adjustment gauge, Part No. 91-129 995-05
● Hook bearing bracket gauge, Part No. 91-129 996-05
● Sewing thread and test material
11.03 Abbreviations
tdc = top dead center
bdc = bottom dead center
11 - 1
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