Adjusting The Thread Take-Up Amount (-[][]3 Specifications) - Brother S-7200B Service Manual

Single needle direct drive straight lock stitcher with thread trimmer
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6. ADJUSTMENTS

6-12. Adjusting the thread take-up amount (-[][]3 specifications)

Turn off the power switch before carrying out this operation.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
NOTE:
Do not use this function with models that are not -[][]3 specifications.
<Thread take-up amount>
33
Increases
Standard
CAUTION
If the thread take-up amount is small and the thread breaks
easily when sewing heavy materials, you can increase the
thread take-up amount.
1. Remove the face plate.
2. Remove the two rubber caps (1).
3. Use a hexagonal wrench 3 to loosen the set screws (2)
and (3) by approximately two turns.
4. Adjust the thread take-up amount.
<To increase the thread take-up amount>
Turn the thread take-up support shaft (4) clockwise so
that the groove (5) is facing straight upward.
<To return the thread take-up amount to the standard
setting>
Turn the thread take-up support shaft (4) counterclockwise
so that the groove (5) is facing straight downward.
5. With the thread take-up support shaft (4) pushed in as far
as it will go, first tighten the set screw (2) until it touches
the screw stop on the thread take-up support shaft (4).
6. After this, tighten the set screw (3).
7. Install the two rubber caps (1).
8. Install the face plate.
Screw
stop
3677M
S-7200B

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