The PFAFF 138 I can now thread

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PFAFF-138 manual pdf
PFAFF-138 manual zip

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News I have found the manual for the PFAFF-138 and here it as a PDF file 8.5meg
I hope you find it useful.
If you want to download it right click on it and click on [Save Target As]

Also if any one finds more info like a service manual please share it and I will give you credit for the info.

I now know how to thread this machine pfaff-138

You don't use both tensioners with only one needle use only one or the other I show below the two ways to thread it I hope this helps.

The needles I use are.

Note: I use it for Upholstery

1955 135x5 #14 and #16

INNOVA
SS1955; DPX7; 134; 797; #16 and #18

Note:
The needle as you can see below has to be mounted to thread front to back NOT side to side
The needle depth is hard to adjust and is critical to get it to pickup the bobbin thread and stitch correctly.

Model # 138-6/4-BS
128 993

I have a book for this PFAFF somewhere and I will scan it and PDF it when I find it.

Using the right side tension

This is one of the ways using the right side tension

Using the left side tension

This is one other of the ways using the left side tension

The name on the plate is "KAISER SLAUTERN"

Note that the needle eye runs front to back not side to side.

Also I have found this foot adapter PFAFF #6603 that allows "short shank" mounted feed to fit on the machine even the newer quick mount assembly seen below.

This is a quick release with a double welt cord foot and the zipper foot