JUKI HZL-UX8 Series - Troubleshooting Mechanical Components; Faulty thread tension troubleshooting; Stitch skipping troubleshooting; Thread breakage troubleshooting

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[2] Search by trouble (related to mechanical components)
Phenomenon Itemtobechecked
Faulty thread tension 6-10: Position of the hook rotation stopper plate
6-11:Adjustingthebobbinthreadtension
6-12:Adjustingtheneedlethreadtension
Stitch skipping 6-1:Adjustingtheneedlebarheight
6-2:Adjustingtheneedleentrypoint
6-5: Feed timing
6-8:Timingbetweentheneedleandthehook
6-9:Clearancebetweentheneedleandthebladepointofhook
Threadbreakage 6-1:Adjustingtheneedlebarheight
6-8:Timingbetweentheneedleandthehook
6-10: Position of the hook rotation stopper plate
Hitch stitch 6-2:Adjustingtheneedleentrypoint
Faulty material feed 6-3: Feed dog height
6-16:Adjustingthepresserbarheight
6-22: Position of the automatic DF motor
Contactbetweenneedleandthroatplate
or hook
6-2:Adjustingtheneedleentrypoint
6-5: Feed timing
6-8:Timingbetweentheneedleandthehook
Faulty pattern shape 6-3: Feed dog height
6-18: Longitudinal feed
Faulty automatic thread trimming 6-6:Adjustingtheshield
6-20-1: Attaching/removing the thread trimmer unit
6-20-2:Adjustingthethreadtrimmingswitch
Faulty operating noise 6-4:Timingbelt
6-17:Motorbelt
Needle threader 6-13: Vertical position of the needle threading hook
Fails to start sewing 6-19-2:Adjustingtheheightoftheauto-lifter
Faulty automatic presser foot lifting height 6-19-2:Adjustingtheheightoftheauto-lifter