How do you thread a SInger Sewing machine 2623

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

https://www.singer.com > default > files > outdated_product
PDF
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

https://www.manualslib.com > ... > 191D -

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

Instruction Manuals - Singer

https://singerco.com.au > Support

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

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Are you sure you did not mean the singer model 2623? I found that model, but not the one that you mentioned. You can get the sewing machine manuals here on this site. Hope this helps you. http://singersewingmachine.com/singer-model-2623-pdf-manual-download

I checked with singer and they don't have a free manual for that
model sewing machine, there are a few places that have a manual
they usually run under $20.00.

You can download a manual for your machine here http://www.singerco.com/accessories/instruction-manuals/search just type 750 into the search field.

1.sew usa
2.sewing manuals.com
3.ebay

Need a manuel for a Kenmore sewing machine model 158.10691

If you email me I will attach full timing instructions for you, [email protected]

Try this. it's a online manual.

http://www.scribd.com/doc/2384747/Singer-Sewing-Machine-Manual

Check for a thread jam in the bobbincase. Lower looping is most commonly caused by a lack of top tension. Raise the presserfoot and rethread themachine again. Once threaded put down the presserfoot and pull the thread through the needle. if it pulls through easily it is still not threaded correctly. When threaded correctly the needle should bend but not break when you pull the thread through. good luck.