Thread Tension; Sew Without Feed Teeth - Singer SE9150 Instruction Manual

Thread Tension

To set the thread tension, turn the dial on top of the machine.
Depending on the fabric, thread, etc, the tension may need to
be adjusted. For the best stitch appearance and durability, make
sure the needle thread tension is correctly adjusted. For general
sewing, the threads evenly meet between the two layers of
fabric (A).
If the bobbin thread is visible on the top side of the fabric, the
needle thread tension is too tight (B). Reduce the needle thread
tension.
If top thread is visible on the underside of the fabric, the needle
thread tension is too loose (C). Increase the needle thread
tension.
For decorative stitches and buttonholes, the top thread should
be visible on the underside of the fabric.
Make a few tests on a scrap piece of the fabric you are going to
sew and check the tension.

Sew without Feed Teeth

When sewing on buttons or doing other sewing techniques
where you don't want the fabric to feed, you need to lower the
feed teeth.
The feed teeth lever is found at the back of the free arm.
1. Lower the feed teeth by moving the lever to the "Feed Teeth
Down" position.
2. Raise the feed teeth by moving the lever to the "Feed Teeth
Up" position.
Note: The feed teeth will not raise immediately when the lever
is switched. Turn the hand wheel toward you one full turn or
start sewing to re-engage the feed teeth.
20 – P reparations
A
B
C
1 2