Pfaff 30 Instruction Book 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