My serger runs fast at first but after about 3' it starts slowing down. If I stop and let it sit a few minutes, it starts fast again then slows down. Is there a problem with the motor maybe? Please help, I love my serger!
Your problem is probably the stitch length adjustment cam (located on the left side of the machine) To fix this problem you will need to remove the small plastic cap (with red arrow) covering the screw securing the cam. It is usually also necessary to remove the connecting rod/sleeve that the cam rides in. Once both of these parts have been removed, you will need to carefully separate them and resurface the inside of the sleeve. This can be done with a very fine (500grit or higher) emery paper. Once the cam fits inside the sleeve without binding, reassemble using sewing machine oil or lithium grease and adjust feed dog timing.
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