Singer 321K, 321D instruction manual Contents

Page 2

1		Safety Instructions	1
1.1		Important Safety Instructions	1

1.2		For Safe Operation	2
2		Product Description and Machine Speciﬁcation	3
	2.1	Product Description	3
2.2		Machine Speciﬁcation	4

2.3		Motor, Motor Pulley and V-Belt Speciﬁcations	5
3		Mounting and Adjustment Instructions	6
	3.1	Table Cut-Out Diagram	6
3.2		Machine Installation	7

	3.3	Lubrication and Oil Drainage	9
3.4		Fill Silicon Oil to Reservoir	10

	3.5	Needle Attachment (or Replacement)	10
	3.6	Replacing Upper and Lower Knife	11
3.7		Machine Threading	12

	3.8	Thread Tension Adjustment	13
3.9		Presser foot pressure	14

	3.10	Adjusting the Differential Feed Rate	14
3.11		Stitch Length Adjustment	15

3.12		Parts Relation and Timing	16
	4	Maintenance	17
	4.1	Machine Head Cleaning	17
4.2		Oil Change and Filter Cleaning	17

	4.3	Safety Inspection	17
	5	Troubleshooting	18

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Contents 321D Contents Contents Safety Instructions For Safe Operation Product Description Machine Speciﬁcation Product DescriptionMachine Speciﬁcation Motor Motor Pulley V-Belt Speciﬁcations For 321D seriesSetup and Adjustment Instructions Table Cut-Out DiagramMachine Installation 2cm Lubrication Oil Drainage Needle Attachment Or Replacement Fill Silicon Oil to ReservoirReplacing Upper Lower Knife Replacing the upper knifeThreading Threading DiagramMachine EasyThread Tension Adjustment Adjusting Differential Feed Rate Presser foot pressureStitch Length Adjustment Parts Relation and Timing Safety Inspection Oil Change Filter CleaningMachine Head Cleaning Troubleshooting Troubleshooting Parts list Machine Bed Frame Components Machine Bed Frame Components Machine Cover Components Machine Cover Components1 31 32 Machine Cover Components Crank Shaft Drive Components Description Qty Thread 20702001 Crankshaft 20702050 Thread Tension Components Thread Tension Components Thread Guide Take-up ComponentsThread Guide Take-up Components For 3-thread and 4-thread Thread Guide Take-up Components Thread Guide Take-up Components 20713054 Needle Bar Components Needle Bar Components For 3 thread For 4 thread For 5 thread Xxxxxxxx Needle Plate Needle Guard Components Needle guard Front S01027 Screw Upper Looper Components Upper Looper Components Lower Looper Components Lower Looper Components Chain Stitch Looper Components Chain Stitch Looper Components Chain Stitch Looper Components Chain Stitch Looper Components Differencial Feed Components Differencial Feed Components Feed Dog Components Main feed dog assembly Knife Drive Components Xxxxxxxxx Presser Foot Components Spring except 321D-251H / 321K-251H Lubrication Components Lubrication Components Lubrication Lubrication Components Silicon Oil Reservoir Components Silicon Oil Reservoir Components Exclusive Parts List for 321K series Exclusive Parts List for 321K series Thread Stand Components Thread Stand Components Accessories Accessories Machine Support Plate For Semi Submerged Components Speciﬁc Parts for 321D-251H and 321K-251H XxxxxxxxOptional PartsOptional Parts Back Latch Components Back Latch Components Vacuum Suction AFL Device Option partsVacuum Suction AFL Device Option partsChain Cutter DeviceList Rev.05 Jun.2010

321D, 321K specifications

The Singer 321K and 321D are revered sewing machines that cater to both novice sewists and experienced crafters alike. Renowned for their durability and user-friendly features, these machines blend traditional craftsmanship with modern technology. Their compact design makes them ideal for home use, while providing the performance needed for a variety of sewing projects.

One of the standout features of the Singer 321K and 321D is their robust build quality. Designed to withstand the rigors of regular use, these machines come with a metal frame that ensures stability and minimizes vibrations. This solid construction contributes to consistent stitching, allowing users to tackle everything from delicate fabrics to heavier materials with confidence.

Both models feature a versatile selection of built-in stitch options, catering to a wide range of sewing styles and projects. The stitches include straight, zigzag, and decorative patterns, enabling users to unleash their creativity with ease. Additionally, the adjustable stitch length and width provide further customization, allowing sewists to achieve precise results for any task.

Another highlight of the Singer 321K and 321D is their intuitive threading system. The machines are designed with a simplified threading process, complete with color-coded guides and an automatic bobbin winding system, which significantly reduces setup time. This user-friendly design is particularly beneficial for beginners who may be learning the ropes of sewing.

For added convenience, both machines feature a free arm, making it easier to sew cylindrical items such as sleeves and hems. The removable accessory storage compartment allows for easy access to tools and notions, keeping the workspace organized and efficient.

In terms of performance, the Singer 321K and 321D boast a powerful motor that delivers consistent speed and precision, making them suitable for various sewing tasks, including quilting, alterations, and garment construction. The machines also come with adjustable presser foot pressure, ensuring optimal fabric feed for different thicknesses.

Safety is another key consideration, as these machines include features like a built-in needle threader and safety switch. This ensures that users can sew with peace of mind, knowing that the machine prioritizes user safety while providing exceptional functionality.

In conclusion, the Singer 321K and 321D are remarkable machines that combine traditional sewing principles with contemporary technology. Ideal for both beginners and seasoned sewists, their durability, versatility, and user-friendly features make them a standout choice in the world of sewing machines. Whether for simple repairs or intricate creations, these models are a valuable addition to any sewing enthusiast's toolkit.