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(17) Adjustment of tension disk rise
1. Adjustment of tension disk rise
The standard positioning is such that tip of the disc floating pin
comes in contact with the upper tension
disc
when the upper feed roller rises by 1.0mm above the upper face of the throat plate and that
the upper tension disc keeps floating when the upper feed roller rises further.
The standard size is 6.5mm between the tip of the disk rise pin and the upper face of the tension thread
path .
Driver groove
6.5mm
1.0mm
Top surface of the throat plate
Standard Adjustment
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