Question about Riccar R751
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Posted on Jan 02, 2017
SOURCE: Machine not sewing
Make sure you have threaded the machine from right to left, it sounds like the needle thread is trapped under the lower looper thread and cannot form a stitch.........start the threading over from scratch like this:
Follow that slowly and carefully to make sure you have not missed any thread guides on the way, as each one needs to be followed through to ensure correct tension and thread progression.
If you are certain that all threaded correctly, did you have a fabric jam and pulled it loose ? If so, the timing may well be affected.
Post an update and we'll get this right.
Posted on Feb 03, 2008
Please, tell me, is the main spintle, still on the machine, or it came off with the rest of the parts?
If you can put the tension parts, the one next to the other in front of the machine, and upload a photo for me, it will be very easy to explain how to put them back.
Posted on May 30, 2008
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
Jamming bobbin case:
If it is damaged from turning out of place once, it could have rough spots on it that makes the thread hang on it, and keeps making it turn over and over. Use a finger nail board (fine sanding) and smoothall rough spots. Then reset the bobbin case taking care to put the notch in the bobbin case in alignment with the proper spot in the machine (basically 5 o’clock) when looking at the round area where the bobbin case goes.
Posted on Mar 18, 2009
SOURCE: sewing machine thread nesting
I have fixed it now the bobbin case didn't seem to stay seated during sewing or tangling i should say!. I decided to change the needle and from then on everything worked fine.
Posted on May 09, 2009
is the bobbin thread in correctly( meaning is the bobbin thread in the lower tension) if it is and the top thread is in correctly and make sure the feeddogs are in the up position if all of these factors are alright then it will have to go to a local dealer to get taken care of
Posted on Oct 28, 2009
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