Nelco R-450-2 sewing machine

Sorry free I could not find free manual. Paid version is available at this link
Nelco Sierra 234F manual sewing machine instructions Enlarged Hard Copy - Sewing Manuals & Instruction (bonanza.com)

1. http://www.sewusa.com/index.htm try finding it on this website. maybe you will get lucky.

In my experience, Nelco manuals are sometimes difficult to find. You might try:

http://www.sewusa.com/Sewing_Machine_Manuals/Nelco_Sewing_Machines.htm

Nelco manual Sewing Machines

nelco sewing pdf 1 Docs Engine com

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try these links for a manual

Nelco Sewing Machine Manuals Instruction and Repair Manuals


http://sewusa.com/Sewing_Machine_Manuals/Nelco_Sewing_Machines.htm


Sewing Machine Manual PDF Downloads and CD

Owner's manual is the best source.

Nelco Sewing Machine Manuals Instruction and Repair Manuals

http://www.sewusa.com/Sewing_Machine_Manuals/Nelco_Sewing_Machines.htm

Nelco Sewing Machine Manual PDF and CD


P.S.--for ~$35, a standalone bobbin winder can be purchased at JoAnn's Hancocks, or Amazon.com.

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To find a user's manual, search the internet for:
Manufacturer + Model + the word "Manual"

Search YouTube videos for threading tutorials:

Nelco Zigzag Sewing Machine Final Test Demonstration Video

VINTAGE ALL METAL NELCO MODEL 400 2 SEWING MACHINE

NIFTYTHRIFTYGIRL Vintage Nelco model 250 sewing machine

With your Nelco, be sure that you install the needle properly. Frequently, Nelco machines take the needle with the flat side facing toward the throat of the machine--not toward the read like most other machines. The upper thread will thread through the needle's eye from the left toward the right. They also are a left needle position machine--meaning, the standard position of the needle when sewing straight stitch is at the left side of the presser foot, not center like most other machines.

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TO SEE THE MANUAL CLICK HERE
BEST OF LUCK