Question about Toyota STF39 Mechanical Sewing Machine

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Toyota stf39 sewing machine - Toyota STF39 Mechanical Sewing Machine

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  • udbasenji
    udbasenji Feb 20, 2012

    I was looking for a service manual for this machine - not the user manual. The original problem was no control of stitch length. Usually feed dog height and/or foot pressure, and sometimes, stitch balance can fix this. This was not the case. As I have experience with sewing machine repairs, I opened the case and found a long tension spring hanging from the actuator for the stitch length / feed dog control. I found the attachment point for the spring on the metal chassie for the machine. Using long handled forceps, I locked them just below the last round of the spring. Using another pair, I increased the bended in the hook portion of the tension spring, to prevent possible detachment in the future. I reattached the spring and actuated the stitch length arm to be sure the mechanism was functioning properly. I can't say I am overly impressed with the mechanism used to operate stitch length. My old mechanical Janome 5018 is far better crafted, which seems strange as both of the machines are designed by two reputable Japanese companies. I don't recommend this adventure for the inexperienced. The machine is functioning properly. Like the Janome 5018, it is a mechanical sewing machine and requires a certain amount of 'tinkering' and patience to set the machine up, but it's well worth it.


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