Brother SL100 Service Manual page 139

Adjustment
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8. Attach the tension control knob on the gear of tension control stud.
*Key point
• The groove on the tension control knob should be facing upward when it is attached on the gear of tension
control stud.
Gear of tension control stud
9. Tighten the screw while holding the tension control knob.
10. Attach the thread tension label to the tension control knob.
*Key point
• Thread tension label should be attached by matching its slit to the marked position on the tension control
knob.
Upper thread tension
Tension control knob
Tension control knob
4 - 21
Groove
Tension control knob
Taptite, Bind B M3X10
Screw
Screwdriver
Marked position
Thread tension label