Please could you tell me what grade of oil a Singer S 191 D300A uses? It has a sump. thanks, Sue Cox.

Question edited for clarity and change the Spanish gentleman's name 'Manuel' to 'manual'. :>D

Singer CG-500 Commercial Grade Workbook - ManualsLib

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View and Download Singer CG-500 Commercial Grade workbook online. Heavy Duty Commercial Grade. CG-500 Commercial Grade sewing machine pdf manual download.

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  Singer CG-500 Instruction Book [Page 24] - ManualsLib

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  Singer CG-500 Manual Online: Threading the machine. Threading the machine 1. Place pin. Use the 2 correct spool pin holder to hold spool firmly in place. 2.

Contact Singer or a distributor to inquire.

It is an industrial machine and suitable for leather, so I reckon you can use any thread you want. Seems it is a 191 D300A

https://www.google.com/search?safe=off&rlz=1C1QJDB_enCA643CA644&sxsrf=ALeKk03ofduDBUiaUauroZKdpZ1bFKp1Sw%3A1613518603191&ei=C1csYMKFC6uAtgW-3LS4BQ&q=singer+191+d300aa+thread+classification
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Service and Owner's Manuals

Singer 191D Lockstich ' Instruction Manual and ... - Singer.com

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Read all instructions, take care of this manual, and use it as reference when necessary. Page 5. 2. High Speed Straight Lockstitch Sewing Machine ' Instruction ...

SINGER 191D SERVICE MANUAL Pdf Download ' ManualsLib

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View and Download Singer 191D service manual online. 191D sewing machine pdf manual download.

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Singer Instruction manuals for new and old sewing machines and appliances. ... Singer 15-88, 15-89 and 15-90. Singer 66k. Singer 99 ... Singer Industrial 191D. You've visited this page 2 times. Last visit: 06/03/20

No not compatible

You can find quite a few on the internet:

Amazon com Singer CG590 Commercial Grade Sewing Machine

Amazon com Customer Reviews Singer CG590 Commercial Grade Sewing Machine

Singer CG 590 Mechanical Sewing Machine

Singer CG 590 11 Extra Feet Package

..

Sorry we have no means to help locate this.

Problem with sump or with sump screw? Or overly full?
I'm currently refubishing a Singer 491. To understand what sump and sump screw are, check out the YouTube channel of becauseimcrafty for their instruction on changing the oil. This demonstrates the large oli pan of a Singer industrial machine that is similar to yours as far as the oil "pan" or "sump" goes. TItle of their video is <<Industrial Sewing Machine l Changing the OIL>>.

Not sure if link allowed here: https://www.youtube.com/watch?v=yIF8npj-VLk

Read your manual, it tells you where, and what not to oil. Your manual can be downloaded for free at www.singerco.com

On the right is a lever .. Bottom has numbers .. Mid says "fine" .. Move that lever up to the top for reverse

I went to the Singer Website "http://www.singerco.com/accessories/manuals.html" and searched those model numbers and found no manuals listed. You might try their customer support line at: 1-800-4-SINGER.