Pfaff 30 Owner's Manual - Page 9

The renson shouid be regulated n accordance w h tne materia to be sewn and snould be sucn bot e sritcnes wiL ae tghtly se and ie in a straight ne. Fig. 13 Tne grade o nread ued mays an rncorcn nar r meeting these -eqwremenS. Sneer fabrics equ re a tHn and sof threoa wini e astic iarer as ca ror a reslient tnread such as s crc., in order ro prevent tne seams from breoKrg when suolected to strain. ttE:1[ fi ii Ii fj Eg. 14 n regu aring the rnread tensions you hove to nave a tHe experience before you can tell wnich tension needs adjustment. In Fig. 14 eirher the upper tension may be too t gir or he ower tensn too oose, Fig. 15 9