Question about Toyota STF39 Mechanical Sewing Machine
I have gone through the manual and done everything step by step to get the correct tension, but it is still sewing incorrectly. On the stitch selection dial and with the settings as recommended in the manual the only way to get it somewhat straight stitching is to have the stitch width dial at 0 (which is not what the manual recommends). If you want to stitch in a zigzag you have to increase the stitch width dial, but the manual does not address that. This still does not solve the tension problem though.
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Posted on Jan 02, 2017
SOURCE: bobbin tension?
Try threading the machine with the presser foot up to see if this will solve the problem.
When a sewing machine is threaded with the presser foot down, the thread cannot properly enter the tension. No tension control of the top thread and it cannot form a satisfactory stitch.
You might be able to find a manual for your machine at sewusa.com
Posted on Mar 01, 2010
SOURCE: I have a mORSE 6500
The tension will depend on the material (knit, heavy denim, etc). See this pdf for a description of testing and setting the tension: www.ca.uky.edu/HES/fcs/FACTSHTS/CT-MMB-213.pdf . Most of my sewing is on double knit fabric and I start with the tension on 4. (Turn the knob to the right to get a higher value and tighter tension). The stitch length depends on the material if you are basting (for test fitting or prior to installing a zipper, for example) or if you are sewing the seam. Basting uses a long stitch, about 5-6 mm (4-5 stitches per inch). Most seams for a mid-weight fabric use a stitch length of 3-3.5 mm (8-9 stitches per inch). See Table 1 here: http://www.dummies.com/how-to/content/making-machine-stitches-work-for-you.html for more details.
To insert the cams, open the top of the machine and identify the fixed cams in the machine. If another specialty cam is installed, you may need to remove it to put in another cam. My machine (a Singer) only has space for one specialty cam at a time. The cams are labeled with the stitch that they provide and the stitch indicator faces up on the cam stack. (For my machine that means that the tall ring of the cam is up.)
A You-tube video of using the Morse 6500 is available: http://www.youtube.com/watch?v=ksfZZyqO1eE .
I hope this helps.
Posted on Mar 31, 2011
SOURCE: loopy stitching
1. The needle is not inserted correctly
Remove needle & reinsert needle( flat side towards the back of machine)
2. The needle is damaged
replace with new needle
3. The wrong size needle is being used
Choose a needle to suit the thread & fabric
4. The foot not attached correctly
Check & attach correctly
Posted on Mar 12, 2012
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