Imax Lss-202 Enhanced Type Mini Sewing Machine Double Thread Speed Household Desktop For anything from silk to denim; hand switch or foot pedal to start.Mini 2-speed sewing machine offers double thread and perfect stitch control.If you got sewing machine that no "iMAX" logo ,you can make return request no need for reason. This sewing machine is basic sewing machine,small and portable, with easy-to-use features,suit for new sewing machine user. Top drop-in bobbin ensures easy threading; automatic thread rewind Few checks that are required: 1) Threading 6 holes when feeding threads.2) Pull the top thread after threading to make the smoothness.3)Make sure the top thread is between the 2 iron sheets when it through the elastic adjusting button.4) Make sure the flat surface towards the hand wheel when install the needle.5) Check the thread is threaded outside-in and towards the hand wheel.6) Check the bobbin thread spool is installed clockwise.7) Check the direction of the thimble screw is correct.(8) Rotate the hand wheel manually for the thick cloths and electrically for the thin cloths .9)Before switching on the machine, turning the hand wheel manually for a few steps to prevent thread from missing stitches. (10) Have a test of the machine with better needles and better threads Few checks that are required: 1) Threading 6 holes when feeding threads.2) Pull the top thread after threading to make the smoothness.3)Make sure the top thread is between the 2 iron sheets when it through the elastic adjusting button.4) Make sure the flat surface towards the hand wheel when install the needle.5) Check the thread is threaded outside-in and towards the hand wheel.6) Check the bobbin thread spool is installed clockwise.7) Check the direction of the thimble screw is correct.(8) Rotate the hand wheel manually for the thick cloths and electrically for the thin cloths .9)Before switching on the machine, turning the hand wheel manually for a few steps to prevent thread from missing stitches. (10) Have a test of the machine with better needles and better threads if it keeps getting jammed: 1) Check the threading of top thread and bobbin thread and pull the thread at all threading places to identify where is wrong.2) Check whether the machine chassis gets stuck; if so, the needle will be unable to move downward by turning the hand wheel. For which you need to adjust the position of bobbin thread spool and groove, and put them away correctly