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Thread: 301 looping on back

  1. #1
    Member Varese's Avatar
    Join Date
    Feb 2012

    301 looping on back

    I have done numerous tension adjustments,changed needles, changed thread. If I sew slowly it has great stitching, front and back, if I run the machine fast I get a lot of looping on the back. Has anyone had a similar problem with their 301

  2. #2
    Super Member irishrose's Avatar
    Join Date
    Nov 2010
    Cadillac, MI
    Blog Entries
    Only if I overfill the bobbin and the thread slips out of the slot in the bobbin holder. Have you 1) cleaned the tension disks with crochet cotton or dental floss 2)cleaned out the lint in the bobbin area? A dirty machine will do strange things. You have to remove the two screws in the needleplate to really clean it underneath. Be sure to put the little hook back between the groove in the plate before tightening the screws. Do you have a manual - good cleaning instructions there?

  3. #3
    Power Poster miriam's Avatar
    Join Date
    Mar 2011
    Victorian Sweatshop
    Blog Entries
    Has anybody got tension problems???
    I made a post a while ago about tensions - maybe something on there will help
    NEVER let a sewing machine know you are in a hurry.
    good mothers let you lick the beaters - great mothers turn it off first

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