June 2nd, 2008, 10:06 AM
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#3 (permalink)
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Junior Member
- Join Date:
- May 2008
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Re: TMFX-C904 for Sale 7000.00 or Best Offer
The descriptions of the machine are aimed at common problems related to this model specificly, or to any machine over 10 years old. Common to this style of thread break detection is after about 10 years, the machine begins to give false thread breaks or it does not sense the thread breaks. Cleaning the contacts and installing new stainless steel springs fixes this problem. I had to make a tube frame for the machine, so I am explaining the technical changes to the tube sash that is found on new tajima's. The take up levers have a bushing where the thread passes through the take up lever. This helps in the smooth delivery of the thread. Installing new rotary hooks and bobbin cases results in the best stitch the machine is capable of doing. The box that drive the X and Y motors and the main shaft motors have a cooling fan and heat sink that many people forget to clean. When clogged with dust and lint, the box will overheat causing failure of one or more PC Boards which may cost over 2000.00 dollars to replace. A larger cooling fan with a higher CFM will reduce the chance of PCB failure.
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