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General| Brand | Seiko |
|---|---|
| Model | TH-2B |
| Category | Sewing Machine |
| Language | English |
Overview of specifications for Model TH types, including speed, needle, and bed size.
Details on points requiring lubrication for the sewing machine.
Instructions for correctly inserting the needle into the sewing machine.
Guidance on selecting and identifying the correct thread twist.
Procedures for removing and inserting the bobbin into the bobbin case.
Step-by-step instructions for winding thread onto the bobbin.
Sequence for passing the thread through the sewing machine's threading path.
How to adjust needle and bobbin thread tension for balanced stitching.
Guidance on adjusting the pressure exerted by the presser foot.
Methods for adjusting the forward and backward stitch length.
Determining positioning for stitch length at forward and backward amount.
Procedure for adjusting the thread tension releasing mechanism.
Steps for removing the shuttle hook from the sewing machine.
Comprehensive adjustments for various critical points on the sewing machine.
Aligning needle position with the feed dog hole for 7B & 8B models.
Setting the correct vertical height of the feed dog relative to the needle plate.
Synchronizing the timing of the needle, feed dog, and vibrating foot.
Setting the forward and backward position of the needle bar frame.
Ensuring correct timing between the needle and the hook tip.
Setting the precise clearance between the needle and the hook tip.
Determining the correct position for the needle bar rock frame.
Adjusting the up/down movement timing of the presser foot for 2B & 8B models.
Setting the position of cams for connecting rod and feeding mechanisms.
Setting the position of cam #28102 for the connecting rod based on needle bar position.
Adjusting the position of the feeding cam #28063 for stitch length regulation.
Specific adjustments for needle height and shuttle hook position.
Setting the standard height of the needle relative to the needle plate.
Determining the correct position of the shuttle hook relative to the shuttle race.
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