Adjustment Of Thread Tension Dial - Brother BL6200 Service Manual

12. ADJUSTMENT OF THREAD TENSION DIAL

(B341 ⋅ B349 ⋅ B351 ⋅ B352)
STANDARD
When thread tension dial is set to "AUTO" and presser foot is lowered, upper thread tension should be 10 ~
13g using polyester thread #60.
ADJUSTMENT
1. Set thread tension dial to "AUTO", put polyester thread between tension discs and lower presser foot.
2. Loosen the screw for thread tension control screw.
3. Measure thread tension using tension gauge and adjust tension to 10 ~ 13g by turning thread tension
control screw.
4. Tighten the screw.
(B338 ⋅ B346 ⋅ B347 ⋅ B348)
STANDARD
When thread tension dial is set to "4" and presser foot is lowered, upper thread tension should be 33 ~ 38g
using polyester thread #60.
ADJUSTMENT
1. Set thread tension dial to "4", put polyester thread between tension discs and lower presser foot.
2. Loosen the screw for thread tension control screw.
3. Measure thread tension using tension gauge and adjust tension to 33 ~ 38g by turning thread tension
control screw.
4. Tighten the screw.
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