Thanks a lot!!! I just bought an (old) ADLER 167 and want to refurbish it. I found out that the stich length is not corect... if the lever is fully down, I have a stich length of about 5 or 6 mm, but if I turn de lever to de mark of 5 mm, I have a stich length of 2 mm and when I put the lever on a stich length of 2mm de needle is staying on the same place, no transport at all. I hope the manual can give me some answers.