I Recently Bought A Juki LU- 562 Industrial Sewing Machine But Can't Figure Out How To Threat The Bobbing In The Bobbing Case Can Any Body Help.. Please, I Sew But It Doesn't The Threat Tends To Rip?

Open the latch from the outer edge of the bobbin holder. Hold the bobbin so it unwinds in a counter clockwise direction. Drop the bobbin into the holder holding on to the thread end. Close the bobbin holder latch.
Slide the thread from right to left along the top front edge of the bobbin holder,, should fall into a thin slot.. Turn hand wheel toward you till needle descends into the feed dog hole. The case opener lever will move to the left leaving a space for you to pull the thread to the left and back of the bobbin holder, while gently restraining the bobbin from freely spinning. This action should cause the thread to set itself into the correct position behind the bobbin tension spring...Continue turning the hand wheel toward you and the bobbin thread should pull up after the needle thread goes around the hook assembly.