Juki HZL-E61: cannot get tension right on straight stitch
Back side of fabric thread loose. If I adjust thread tension on machine, it gets loops on back. Tried re threading machine, cleaned dust from bobbin section, put in new needle, thread and bobbin. It worked well before. I have read manual for troubleshooting and can't figure it out. Zigzag and knit stitches are a bit better, but on straight stitch, I can just pull the thread right out from reverse side.
Re: Juki HZL-E61: cannot get tension right on straight...
Loops on the bottom of the fabric direct the problem to the top thread. Rethread again and make sure the thread goes through the tension discs. Lift the foot, because this is what opens the discs. When sewing and the foot is down, the discs should be closed and thus giving the upper thread the tension it needs.
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According to the manual, you should not need to adjust the bobbin tension (and I located other sites which stated the bobbin tension cannot be adjusted on this machine). Apparently, all the tension adjustment is accomplished through the upper thread::
"EN Thread Tension Upper thread tension Basic thread tension setting: "4". (1) To increase the tension, turn the dial to the next number up. To reduce the tension, turn the dial to the next number down. A. Normal thread tension for straight stitch sewing. B. Thread tension too loose for straight stitch sewing. Turn dial to higher number. C. Thread tension too tight for straight stitch sewing. Turn dial to lower number. D. Normal thread tension for zig zag and decorative sewing. Correct thread tension is when a small amount of the upper thread appears on the bottom side of fabric. Lower thread tension The bobbin tension has been set correctly at the factory, so you do not need to adjust it. Please note: - Proper tension setting is important for strong seams. - There is no single tension setting appropriate for all stitch functions, thread or fabric. - A balanced tension (identical stitches both top and bottom) is usually only desirable for straight stitch construction sewing. - 90% of all sewing will be between "3" and "5". - For zig zag and decorative sewing stitch functions, thread tension should generally be less than for straight stitch sewing. - For all decorative sewing you will always obtain a nicer stitch and less fabric puckering when the upper thread appears on the bottom side of your fabric. 1 A B C 22 D"
Doing further research, I found this statement on a machine review site:
"After reading reviews online from where I've bought my drop-in bobbin machines, I think many of the negative reviews are due to the bobbin thread coming up without laying across the bobbin. It can cause the stitches to look very sloppy and no amount of tension adjusting can fix the stitches."
There are several machine review sites wherein 4423 owners stated their disappointment in the 4423's performance. Some said the machine failed almost immediately and others said the machines developed problems when sewing heavy fabric.
. re-thread your machine with a rainbow of colors. (important that you remove the existing threads if you are not sure it is threaded properly.) make sure you are lifting the presser foot while rethreading.
Sew a good 6 inches.
Look to see which threads are the offenders and tighten the co-responding tension knobs a little.
Sew another 6 inches. Examine the result. Adjust tension again if needed.
Work this way until you have the stitch balanced.
Finally when your stitches are perfect. clip the threads at the spools in back. And tie on the coordinating colored thread for your fabric.
Get used to this procedure since it is common to have to adjust tensions when you change fabric. Good luck!
try a new needle--one that is for the fabric being sewed then try to adjust the top thread tension again, if the stitches remain loose and the tension won't adjust then the tension knob needs to be checked to see if there is something wrong with it. also check to make sure the bobbin is inserted correctly into the bobbin case, if the bobbin is not turned the right way in the bobbin case the sewing machine will not stitch correctly.
Load your sewing machine with one color on top, threaded through the needle. Load the second color thread into the bobbin and thread.
Fold the scrap fabric in half, and sew a straight stitch at least 2 inches long. Look closely at the seam. If you see loops of the bottom color thread on top of the fabric, proceed to Step 3. If you see loops of the top color thread on the bottom of the fabric, proceed to step 4.
Loosen the top tension. Since the top tension is so tight, it is pulling the bottom thread up through the fabric. Loosen the top tension by turning the numbered knob on the front of the sewing machine counterclockwise by one number.
Tighten the top tension. Since the top tension is too loose, the bottom thread is pulling the top thread down through the fabric. Tighten the top tension by turning the numbered knob on the front of the sewing machine clockwise by one number.
Sew a straight stitch 3 inches in length. Check the stitching. It is perfect if the threads meet in the middle, and you can only see the top thread on top and the bottom thread on bottom. If it still needs adjusting, go back to step 2 to repeat the needed steps.
Using two different colored threads makes it easier for you to see which thread is being pulled.
Always use proper precautions when working with electrical machines.
Step 1. Set the upper tension tighter by turning the dial slightly to the right, or looser by turning the dial slightly to the left. (Or by using the electronic control if the sewing machine has one.) This adjusts the tightness of the main thread. Step 2. Set the lower tension slightly tighter or looser using the dial or electronic control. This adjusts the tightness of the bobbin thread. Step 3. Cut a small scrap of fabric, preferably the same type you want to sew with. Step 4. Sew a few test stitches on the scrap. Examine the stitches to see if they’re too tight or too loose. The stitches should lie flat against the fabric, without pulling the fabric or making loops that stick out. Step 5. Repeat Step 1 to Step 4 again as needed.
if the machine regular needle threads front to back NOT side to side, you can use a double needle. simply pass both threads thru all the same slots (thread one at a time so they don't get twisted up) then just before the needles, leave one out of the thread guide just above the needle. you may have to loosen the top tension SLIGHTLY, like a half number. and do NOT use a zig zag stitch without first hand cranking it thru the cycle to be sure the needles clear, or you'll make a 5.00 mistake (the cost of the double needles!)
Hi, my wife and I just bought a Juki HZL-E80... I love the machine. I had a problem like you discribe...This problem can come from two sources...one the bobin has been installed improperly. ...or been wound incorrectly by not haveing adjusted the Bobbin tension ...I did the tension adjustment with the screwdriver supplied with the machine accessories. Also...this is a biggie...the auto matic needle threader works great...but I discovered that when I preformed this function..that I over looked the thread holder that keeps the thread even with the needle....so, the solution is to thread the needle then be sure to check that the thread coming down from the spool is placed behind the little wire holder above the needle...I hope this helps you ...because it is a wonderful machine.....Bill & Donna Bramble...Caldwell Idaho...