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General| Brand | Riccar |
|---|---|
| Model | RL-330 |
| Category | Sewing Machine |
| Language | English |
Identifies and labels various components of the RICCAR LOCK RL-330 sewing machine.
Instructions for connecting the motor controller and plug to a power source.
Guidance on operating the machine's speed using the foot pedal.
Details the machine's normal running speed and motor rotation direction.
Notes on potential motor heating and normal operation sparks.
Guidance on checking and adjusting the drive belt tension to approximately 10mm flex.
Instructions for lightly oiling key points 1-2 times per month.
Procedure for opening and closing the looper cover using the lever.
Emphasizes correct threading to achieve a well-formed seam, advising to thread loopers first.
Step-by-step guide starting with threading the left looper.
Instructions for performing a test sew with material to check thread interlocking.
Illustrates proper stitch formation for correct thread tension.
Explains how to adjust thread tension using regulator dials.
Illustrates adjustments for needle thread tension being too loose or looper tensions too tight.
Illustrates adjustments for right looper tension being too loose or left looper tension too tight.
Illustrates adjustments for left looper tension being too loose or right looper tension too tight.
Tips on inserting cloth, initial stitches, and guiding fabric during sewing.
Instructions for removing sewn articles and finishing seams to prevent unravelling.
Method to prevent seam unravelling by sewing back along the seam.
Guidance on adjusting presser foot pressure for light or heavy fabrics.
Procedure for adjusting the upper and lower knives to set the seam width.
Steps to adjust stitch length by manipulating the feed regulator and nut.
Instructions for removing the old needle using a screwdriver and tweezers.
Procedure for fitting a new needle, ensuring correct orientation and tightening.
Steps for removing and replacing the upper knife, including alignment.
Procedure for removing and replacing the lower knife, including alignment with the needle plate.
Identifies symptoms indicating the need to replace motor carbon brushes.
Detailed steps for replacing worn motor carbon brushes.
Addresses issues like cloth not feeding and needle breakage with solutions.
Troubleshooting thread breaks and skip stitching, including tension and needle fit.
Solutions for poor seam formation and fabric puckering due to tension or threading.
Chart relating fabric types to recommended threads and stitch lengths.
Details on maximum speed, seam width, stitch length, needle type, and dimensions.
Identifies included items such as an accessories case, screwdriver, tweezers, and needles.
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