Singer owns the White line. The manual for the 1934D Superlock is available in two pdfs: http://www.singerco.com/uploads/download/982_sl-1934d,2000-a-x.pdf and http://www.singerco.com/uploads/download/983_sl-1934d,2000-b-x.pdf .
The section on the thread tension starts on page 38 of the first manual.
I hope this helps. If you need additional assistance, please indicate which threads (upper, lower) that are not correctly tensioned.
Cindy Wells (this is a multi-language manual. Page 38 has the tension information in English. Please note I needed to use the rotate feature in Adobe Reader to make it easier to follow.)
Answers & Comments
Singer owns the White line. The manual for the 1934D Superlock is available in two pdfs: http://www.singerco.com/uploads/download/982_sl-1934d,2000-a-x.pdf and http://www.singerco.com/uploads/download/983_sl-1934d,2000-b-x.pdf .
The section on the thread tension starts on page 38 of the first manual.
I hope this helps. If you need additional assistance, please indicate which threads (upper, lower) that are not correctly tensioned.
Cindy Wells
(this is a multi-language manual. Page 38 has the tension information in English. Please note I needed to use the rotate feature in Adobe Reader to make it easier to follow.)