Pfaff 438 Series

10.2
Adjustment:
10.2.1
.2
.3
Adjustment with open gearcase.
10.0.2
Remove the gearcase cover on the underside of the machine (collect any oil which runs
out of the gearcase).
Set stitch length at "0".
To make it easier to see when the feed dog is motionless insert a srewdriver in the slot of
feed rock shaft crank 1.
Loosen clamp screw 2 just enough to allow crank 3 to be turned on its shaft against
resistance.
Turn the balance wheel and at the same time turn feed shaft crank 3 until the screw
driver and thus the feed dog is completely motionless.
In this position tighten clamp screw 2.
Check this adjustment (see "Setting").
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com