Riccar 510 how do i adjust the tesion dial .

If it's an older mechanical machine, the stitch width selector or dial has most likely seized.

Wheel on right side that controls the needle up and down is very tight...

Manual:
https://www.sewingpartsonline.com/instruction-manual-riccar-777.aspx

Clean & Oil:
https://www.youtube.com/watch?v=PR5yCxCUA8g

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An older mechanical machine? Possibly could use a good cleaning and oiling. Old oil may have solidified and preventing things from moving.


Wheel on right side that controls the needle up and down is very tight...

Search the internet for:

Manufacturer + Model + the word "Manual"

...

Perhaps the owner's manual will be helpful:

RICCAR 2600 Instruction Manual

FWIW, it appears that the round dial on the far right is the stitch length selector. The round dial at the top is the zig-zag stitch selector.

...

Middle of the dial...around 4-5

the stitch length dial may need to be checked to see if it's worn or damaged or may need a adjustment.

Hi

Please check the manual for your sewing machine:-

http://docs.google.com/viewer?a=v&q=cache:4QJaWOBZPOYJ:www.riccar.com/ftp/whitepapers/8500-Owners-Manual.pdf+The+feed+dial+does+not+rotate+and+stitch+length+is+too+short+in+riccar+sewing+machine&hl=en&gl=in&pid=bl&srcid=ADGEESieuJamAdQ0gjmmLy_5UDbymP298v71ptbD67KYDB9S8iQePww2MbooSvu5E9gmtR-VoOdrWt3CRLR3Tb420OU7y2DfrF-75dnDzUO6g8OgnTSsonI0yrvsjuwaoyk4FJWE-CbP&sig=AHIEtbRdK8TQsQajhbqDSZYSA9vYXl7LLw&pli=1

Also check the links bellow:-

http://www.ehow.com/how_15056_stitch-length-setting.html

http://www.tpub.com/content/clothingandindividualequipment/TM-10-3530-207-14/css/TM-10-3530-207-14_27.htm

Please get back to us if you have further query else please accept the suggestion.

Thank you for contacting fixya.com

You can download free manuals from the Riccar site.
http://www.riccar.com/help/manuals/
I think this is the one you need for your machine:
http://www.riccar.com/ftp/whitepapers/510-Owners-Manual.pdf
Hope this helps!

try some wd-40 or silicon spray & let it set for a couple of hours & gently try to turn the dial, but don't force it or it could brake..& if it doesn't loosen up after a couple of hours, spray it again & wait again & try it then

Hiya, the threading for this machine is pretty standard so you won't be going wrong there. Have you used a sewing machine before? The tension dial (on the extreme left) should be set at 5. The other dial to your left should be on blue zigzag with orange broken line. The dial on the right should be set at 0 and the bottom one on 2 - 3. I've been looking for a manual for this machine as I inherited this one. It took me ages to suss straight sewing out. Another thought is take it to a repairer and ask for a quote. Good luck.