Brother International T-8420B Instruction Manual - English - Page 32
Adjusting the presser foot pressure, THREAD TENSION, Reference values
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7- 2. Adjusting the presser foot pressure Correct stitches 0894M Upper thread 0895M Skipped stitches occur Uneven stitch length 0896M 7. THREAD TENSION Increase the pressure. Becomes weaker 0897M Stitches are puckered Decrease the pressure. Becomes stronger The presser foot pressure should be as weak as possible, but strong enough so that the material does not slip. (Refer to "Adjusting screw height" in the table below as a guide to adjustment.) 1. Loosen the adjusting nut (1). 2. Turn the presser adjusting screw (2) to adjust the presser foot pressure. 3. Tighten the adjusting nut (1). Reference values Use For foundation For light-weight and medium- weight materials For heavy-weight materials Adjusting screw height Approx. 34mm Approx. 34mm Approx. 29mm 2925M T-8420B, 8450B, 8720B, 8750B 26
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