Owner's Manual

T-8420B, 8450B, 8720B, 8750B

7. THREAD TENSION

7- 3. Adjusting the thread take-up amount

The thread take-up amount is adjusted by how the thread is

passed through the thread amount adjuster (1).

<Using the standard thread amount

adjuster (1)>

For non-foundation specifications

Do not pass the thread through the thread amount adjuster

(1). Loosen the screw (2) and slide the thread amount

adjuster (1) to the right-side position.

For foundation specifications

Pass the thread through the thread amount adjuster (1).

The standard position of the thread amount adjuster (1) is

when the screw (2) is in the center of the adjustment range.

When the thread has been passed through the thread

amount adjuster (1), the thread take-up amount becomes

less when the thread amount adjuster (1) is moved to the

right.

It is better not to pass the thread through the thread

amount adjuster (1):

・ When sewing heavy materials using a sewing machine

with foundation specifications

・ When the thread take-up amount is not enough, such as

when the stitch length is increased

It is better to pass the thread through the thread amount

adjuster (1):

・ When sewing with slippery threads such as synthetic

yarns

・ When sewing light materials

・ When sewing with a stitch length of 2 mm or less

・ When sewing under any of the above three conditions and

you would like to prevent skipped stitches, thread

tightening problems such as looping, or thread breakages

Center

2929M

2928M

Do not pass the

thread through.

Pass the thread

through.