Adjust Thread Take-Up Spring - HIGHLEAD GC0318-1A Series Instruction Manual Parts Catalog

Heavy duty top and bottom feed lockstitch sewing machine

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14. ADJUST THREAD TAKE-UP SPRING ( Fig.13,14 )

1) Adjusting the thread take-up spring tension

Loosen Set Screw ( A ), turn Tension Stud ( B ) clockwise to increase the spring tension, or turn the stud

counter-clockwise to decrease the spring tension. After the adjustment, be sure to tighten Set Screw ( A ). The

thread take-up spring tension should be about 30g. To Attain this. First loosen Set Screw ( A ), turn Tension Stud

( B ) counter-clockwise to decrease the tension of Thread Take-up Spring ( C ) to zero, then turn Tension Stud

( B ) clockwise until Spring ( C ) comes to the notch of thread tension regulating bushing, and again turn Tension

Stud ( B ) halfway back ( counterclockwise ) After the adjustment. Tighten Set Screw ( A ).

2) Adjusting the thread take-up spring stroke

Loosen Set Screw ( B ), turn Stud ( C ) clockwise to increase the stroke or turn Stud ( C )

counter-clockwise to decrease the stroke. After the adjustment, tighten Set Screw ( B ).

Before leaving the factory, the thread take-up spring has properly been adjusted. Readjustment is needed

only in the case of special material or special thread.

Fig.13

Fig.14

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