Reliable 7100SB, 7100DB FAQ

FREQUENTLY ASKED QUESTIONS
BLINDSTITCH SEWING MACHINES

Sewing machine operators can often help themselves when their machine does not operate
properly. Here are some simple instructions, which if properly used, can save you time and
mechanic’s service call.

What do I check when the thread breaks?

The recommended thread for blindhemming is Polyester 68/2.
Poor thread quality (too old, or not strong enough).
Make sure you are using the correct needle system, See owners manual.
Check for defective needle (bent or blunt).
Check for incorrect passing of the thread.
Check thread tension, could be to tight or to loose.
Check needle deflector guide, could be worn, replace with new one.
Check the looper timing. See owners manual

What do I check when the needles are breaking?

Select the correct needle size for the type of work being done.
Make sure the needle is inserted correctly.
Make sure you are using the correct needle system, See owners manual.
The ridge-forming disc may be set too high. Turn it in the -- direction (less)
Check the looper setting. See owner’s manual.

What do I check when the thread skips?

Select correct needle size for the type of work being done.
Make sure the needle is inserted correctly.
Make sure you are using the correct needle system, See owners manual.
Check thread tension, could be to tight or to loose.
Check for incorrect passing of the thread.
Check the timing. See owner’s manual.

What do I do when the needle skips the fabric?

Turn the penetration dial gradually towards the

mor e

position for greater penetration - the
calibrated numbers on the dial can be noted and used for reference position for the same
types of material for quick adjustment.
Check to see if needle is blunt or damaged, replace with new one.
Check to see if the machine is set on 1:1 or 2:1. If set on 2:1, the machine will skip the
fabric every second stitch.

What do I do when too much thread is showing?

Turn the penetration dial towards the

less

position for less penetration of the needle through
the material being stitched.
Check thread being used. We recommend Polyester 68/2 for blindhemming.
Check thread tension, could be too tight.

What do I do when the fabric is gathering?

Adjust the thread tension gradually counter clockwise to loosen the tension.