Adjustment Of The Fixed Knife Position; Adjustment Of The Thread Take Up Spring Swing Stroke; Adjustment Of The Thread Take Up Spring Tension; Adjustment Of The Thread Tail After The Trimming - HIGHLEAD HLK-3020 Instruction Manual Parts Catalog

7-12 Adjustment of the fixed knife position

(1) Open the cylinder cover①．
(2) Remove the E-shaped snap ring④，which engages the movable knife②and the link③．
(3) Loosen the setscrews⑤then， remove the
sliding plate⑥．
(4) Turn the sliding plate ⑥ upside down
and loosen two setscrews⑨then，adjust
the fixed knife ⑩ position to be
positioned for the blade edge⑦to have
the clearance 0.5mm from the edge of
the needle plate⑧．
(5) After the adjustment，tighten the setscrews⑨securely．
(6) Put all the parts for this adjustment back to the original locations．

7-13 Adjustment of the thread take up spring swing stroke

Loosen the setscrew②and turn the whole thread tension regulator③then，adjust the thread take up spring
swing stroke to be become 9 to 10mm．
After the adjustment，tighten the setscrew②securely．

7-14 Adjustment of the thread take up spring tension

Insert the screw driver⑤into the slit④of
the thread tension regulator③and adjust
the thread take up spring①tension．If turn
the screw driver to the clockwise，the
thread take up spring tension becomes
tight．and if turn the screw driver to the
counter clockwise ． the thread take up
spring tension becomes loose．

7-15 Adjustment of the thread tail after the trimming

Adjust the thread tail③from the needle after the trimming
with turning the nut ② of the pre-tension①．
If turn the nut②to the clockwise，the thread tail becomes
shorter and if turn the nut②to the counter-clockwise，the
tread tail becomes longer．
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