Pfaff 438 Series

28
Setting:
Adjustment:
28.1
.2
.3
.4
Knee lever play
There must be a noticeable amount of play between nut 2 and forked connection 3
when the knee leveris operated just lightly.
A
db
f
0
0
28.0.1
Loosen locknut 1 of nut 2.
Turn in nut 2 until there is a noticeable amount of play between it and forked con
nection 3 when the knee lever is operated just lightly.
Lock nut 2 in place by tightening locknut 1.
Check this adjustment (see "Setting").
42
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com