How about giving a sewing machine repairman a call & ask him? Here's a you-tube showing how to clean a Singer Touch & Sew 600 series machine.
https://www.youtube.com/watch?v=uHGCdba_p2Q
Here's some more information about oil/grease:
http://theuniversalthreadholder.com/...brication.html
Last edited by osewme; 09-02-2016 at 09:46 AM.