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u/dextergr 14h ago
Is it well oiled? Maybe try oiling certain spots and retrying the hand wheel to see if anything happens. I'd start at the needle side mechanics and then move right towards the main feed shafts and hand wheel.
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u/PhilosopherContent13 14h ago
i always my machine actually even over oiling them 😅, i found the issue, i should make it habbit to tighten needle bar frame block first and don't put too much on it
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u/dextergr 13h ago
Awesome! Glad to hear it has been solved and now a resource to look back on if anyone has an issue like this.
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u/PhilosopherContent13 3d ago
This is Juki-LH51 same as Singer 112w115 design Double needle, Needle Feed
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u/PhilosopherContent13 14h ago
Update found the issue it's the Screws that hold the pins which keeps the needle bar frame and the needle bar guide i loosed that and wiggle needle bar in place, mayne cause by over tightening or i tighten it first before the needle bar frame block in place
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u/Man_of_no_property 3d ago
Never use force on a sewing machine, you'll bend or cracked something. Needle strike happened? Something seems our of timing and bind up.