Place the thread spool on one of the two thread guides. Bring the thread across to the notch on top of the machine guide it to the left and down the front of the machine. Directly under that threader close to the needle wrap it down under and go back to the top right to left then go to the top lever in the up position use your wheel to the right , wrap from right to left going down and threading. Wrapping just means placing around. Now for the bobbin. take casing out wit bobbin thread counter clockwise place in casing and release handle of casing put in machine making sue it is locked in. THen go fishing.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Fit a new needle, clean and oil the hook race, whether-or-not your manual says it doesn't need it and check that you have some tension on the thread coming out of the bobbin case and top tension unit. Are you threading the top thread with the foot up or down ? You should always thread the machine with the foot up to ensure the thread goes through the tension unit properly.
Let me start but telling you that a deco 340 is a good machine and should be sewing great.
First check your threading, make shure you have the presser foot up when you thread the machine. Sounds like that could be the problem.
If you are sure you are threading it right and it is still not working. It could be a timing problem. I had a lady come it with that same problem and it was timed incorectly. That machine needs to be timed to a 1.8mm loop lift. Most machines are set to 2.0-2.3mm. I would ask your teck about this and if he does not now this and is not willing to set it to 1.8mm I would find a new bernina tec.
hope this helps
Remember your machine is only going to work is you have a good teck.
Here is a little jingle to remember as far as the order of threads to thread...
Upper looper, lower looper, left needle, right.
Usuall if you give numbers to the threads from left to right as 1,2,3,4 , you would thread it in the order of 3, 4, 2, 1 . Also when threading the loopers be sure the lower looper thread goes over the top of the upper looper thread as it goes out the back.
Hope this helps.