Question about PfaFF Sewing Machines
How do you adjust timing on pfaff 138 industrial sewing machine
Take the foot off the machine
Remove the needle plate
Remove the feed dogs
rotate by hand until the needle is at the lowest position
continue rotating until the needle rises 2 mm
the hook assembly should be passing exactly by the scarf of the needle
if not loosen the two screws that secure the the hook assembly and rotate the hook assembly by hand until it is exactly at the scarf of the needle and the distance between the hook and the scarf is .1 mm (almost touching the needle)
tightened the two screws, replace the feed dogs and foot and it should sew perfectly
Posted on Sep 22, 2012
I found a user manual but not a tech manual. Perhaps this will help some.
Posted on Jul 31, 2012
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Posted on Jan 02, 2017
You might be in "Stopmatic" mode. Check if your pressure lifter bar is in the upper most position, if it is the machine is disengage and you are set to wind your bobbin. Lower it to the 3 o-clock position this will engage the machine and the needle will operate.
Posted on Aug 10, 2009
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