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Guidance on selecting and inserting the correct sewing machine needle.
Step-by-step instructions for threading the Supernova with one or twin needles.
Detailed instructions for cleaning the shuttle race/feed dog and proper machine lubrication.
Guidance on adjusting upper and lower thread tensions for balanced stitching.
Procedure for timing the shuttle and needle bar for correct stitch formation.
Steps for synchronizing the feed dog and needle bar movements.
Synchronizing zig-zag movement with the needle bar for precise stitching.
Adjusting the timing of the stitch length regulating knob and shaft.
Procedure for timing the automatic control eccentric for proper function.
Steps to prepare for assembling the group as shown in Figure 94.
Pre-assembly steps for the group shown in Figure 95.
Procedure to eliminate any play or looseness in the feed dog mechanism.
Setting the correct height of the feed dog teeth above the needle plate.
Aligning the feed dog with the needle plate slots for uniform movement.
Checking the alignment of the presser foot underside with feed dog teeth.
Correctly positioning the presser bar and presser foot for sewing.
Adjusting the vertical height of the presser foot.
Understanding the role and function of the thread take-up spring.
General rules for adjusting contact fingers using gauge 10-2.
Step-by-step adjustment of the feed regulating rod for automatic stitch length control.
Troubleshooting steps for a motor that fails to run or runs slowly.
Step-by-step guide on how to replace worn motor brushes.
Troubleshooting when the motor operates but fails to drive the machine.
Identifying causes and solutions for a weak motor.
Addressing problems causing the motor to overheat.
Troubleshooting motor smoke or burning smells.
Resolving noise issues such as growling or rattling during motor operation.
Tightening loose motor pulley or bracket mounting screws.
General| Type | Mechanical |
|---|---|
| Built-in Stitches | 30 |
| Free Arm | Yes |
| Buttonhole Styles | 1-step |
| Stitch Functions | Buttonhole |
| Stitch Type | Decorative |
| Presser Feet | Zipper, Buttonhole |
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