1. Introducció
Thank you for choosing the HIROBOT FHSM-520A Electric Sewing Machine. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new sewing machine. Designed for both beginners and enthusiasts, this portable machine offers 16 built-in stitch patterns, adjustable speed, and a reverse sewing function, making it suitable for various home DIY projects and repairs. Please read this manual thoroughly before initial use to ensure optimal performance and longevity of your machine.
2. Instruccions de seguretat
To prevent accidents and ensure safe operation, please adhere to the following safety guidelines:
- Always unplug the machine from the power outlet when not in use, before cleaning, or when performing any maintenance.
- Mantingueu la màquina allunyada de l'aigua o de la pluja.amp environments. Do not operate with wet hands.
- Ensure the power cord is not damaged. Do not operate the machine if the cord or plug is damaged.
- Keep fingers away from the needle, handwheel, and other moving parts during operation.
- Supervise children closely if they are near the machine. This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities unless supervised.
- Use only the power adapter supplied with the machine.
- Col·loqueu la màquina sobre una superfície plana i estable durant el funcionament.
3. Contingut del paquet
Verifiqueu que tots els elements que s'enumeren a continuació s'inclouen al vostre paquet:
- HIROBOT FHSM-520A Electric Sewing Machine
- Pedal de peu
- Adaptador d'alimentació
- Bobines
- Fils
- Agulles
- Various Presser Feet
- Manual d'usuari

This image displays the HIROBOT FHSM-520A Electric Sewing Machine along with its complete set of accessories, including the foot pedal, power adapter, bobbins, threads, needles, and various presser feet. The machine is white with mint green accents.
4. Producte acabatview
Familiaritzeu-vos amb els components principals de la vostra màquina de cosir:
- Selector de puntades: Used to choose from 16 built-in stitch patterns.
- Dial de tensió del fil: Ajusta la tensió del fil superior.
- Botó de puntada inversa: Engages reverse sewing for reinforcement.
- Interruptor de velocitat: Toggles between low and high sewing speeds.
- Volant: Puja i baixa l'agulla manualment.
- Presser Foot Lifter: Raises and lowers the presser foot.
- Agulla Clamp Cargol: Assegura l'agulla al seu lloc.
- Bobbin Winder Spindle: Used for winding thread onto bobbins.
- Port del pedal: Connects the foot pedal for speed control.
- Port d'alimentació: Connecta l'adaptador de corrent.
5. Configuració
5.1 Connexió d'alimentació
- Assegureu-vos que l'interruptor d'alimentació de la màquina estigui en la posició "OFF".
- Insert the power adapter plug into the power port on the machine.
- Connecteu l'adaptador a una presa de corrent adequada.
5.2 Connexió del pedal
For foot-controlled operation, insert the foot pedal plug into the designated foot pedal port on the machine.
5.3 Enrotllament de la bobina
- Col·loqueu una bobina de fil al portacarret.
- Guieu el fil a través del disc tensor de la bobinadora.
- Wind the thread a few times manually around an empty bobbin.
- Place the bobbin onto the bobbin winder spindle and push it to the right.
- Turn on the machine and gently press the foot pedal or use the hand switch to start winding. Stop when the bobbin is full.
- Tallar el fil i treure la bobina.
5.4 Enfilar la màquina
Correct threading is crucial for proper stitch formation. Please follow the threading instructions provided in the detailed diagram or video (if available) that came with your machine. Incorrect threading can lead to skipped stitches, thread breakage, or machine jams.
6. Instruccions de funcionament
6.1 Selecció de puntades
Your HIROBOT FHSM-520A machine features 16 built-in stitch patterns. Rotate the stitch selector dial to choose your desired stitch. The available stitches include straight, zigzag, blind hem, and various decorative patterns.
Note: Stitches 9, 10, 11, and 12 are specifically designed for buttonholes and cannot be used for regular sewing. For general and decorative sewing, select other stitch patterns.

A visual guide illustrating the 16 built-in stitch patterns of the HIROBOT FHSM-520A. These include straight stitches (1-4), decorative stitches (5-8), buttonhole stitches (9-12), and overlock stitches (13-16). Each stitch type is demonstrated on a fabric swatch.
6.2 Ajust de la tensió del fil
The upper thread tension needs to be adjusted according to the fabric type and thread thickness to achieve balanced stitches. Rotate the thread tension dial to increase or decrease tension. A balanced stitch will have both upper and bobbin threads meeting evenly between the fabric layers.
Recomanacions generals:
- Chiffon: Tension 2-3
- Pure Cotton: Tension 3-4
- Linen: Tension 4-5
- Denim: Tension 4-5
These are reference suggestions; always test on a scrap piece of your fabric.

This image illustrates the adjustable upper thread tension dial, crucial for achieving smooth stitches on various fabric types. Recommended tension settings are provided for chiffon (2-3), pure cotton (3-4), linen (4-5), and denim (4-5), emphasizing that adjustments may be needed based on fabric density.
6.3 Reverse Sewing Function
To reinforce stitches at the beginning and end of a seam, use the reverse sewing function. Press and hold the reverse button to sew backward. Release the button to resume forward sewing. This function is typically available for straight stitches (1-4).

This image highlights the reverse sewing function, activated by pressing a button. It shows how the machine can sew backward for reinforcement, specifically for stitches 1-4. The design also includes a free arm for sewing sleeves and cuffs.
6.4 Control de velocitat
The machine offers two ways to control sewing speed:
- Interruptor de velocitat: Use the 'L' (Low) and 'H' (High) switch on the machine for a constant speed.
- Pedal: For variable speed control, connect the foot pedal. Gentle pressure results in slower stitching, while firmer pressure increases the speed.
6.5 Compatibilitat del teixit
The HIROBOT FHSM-520A is designed to sew a variety of fabrics, from lightweight cotton to heavier denim. It can handle 4-6 layers of fabric with a total thickness of up to 2.5mm.
Supported Fabrics: Pure Cotton, Denim, Linen, Oxford, Mixed Yarn, Chemical Fiber, Modal, Corduroy.
Important: Avoid sewing excessively thin fabrics directly. If necessary, place a layer of A4 paper under the thin fabric to increase its thickness and prevent it from being pulled into the needle plate.

This image demonstrates the machine's capability to sew through 4-6 layers of fabric, up to a total thickness of 2.5mm. It also highlights the support for both 1-needle, 1-thread and 2-needle, 2-thread functions.

A collage of various fabric types that the HIROBOT FHSM-520A can sew, including Pure Cotton, Denim, Linen, Oxford, Mixed Yarn, Chemical Fiber, Modal, and Corduroy. A note advises against sewing overly thin fabrics without adding a layer of A4 paper for support.
7. Manteniment
Regular maintenance ensures the smooth operation and extends the lifespan of your sewing machine.
- Neteja: Netegeu regularment la pelussa i la pols de la zona de la bobina i dels transportadors amb un raspall petit. Desendolleu sempre la màquina abans de netejar-la.
- Substitució de l'agulla: Replace needles frequently, especially when they become dull, bent, or if you notice skipped stitches. Use the correct needle type and size for your fabric.
- Emmagatzematge: When not in use, store the machine in a dry, dust-free environment.

Aquesta imatge proporciona una imatge interna view of the sewing machine, showcasing its 'Solid & Scientific Structure'. Key components highlighted include the high-quality ABS housing, BIS Certified Adapter, 280S Motor, and the metal & ABS frame, indicating durable construction.
8. Solució De Problemes
Si teniu problemes amb la vostra màquina de cosir, consulteu els següents problemes i solucions habituals:
- Trencaclosques: Check if the machine is threaded correctly (both upper and bobbin threads). Ensure the thread tension is not too high. Use good quality thread. Replace a bent or dull needle.
- Punts saltats: This is often caused by an incorrect or dull needle. Ensure the needle is inserted correctly and replace it if necessary. Check upper threading and tension.
- Bloqueig de la màquina: Incorrect threading, especially of the bobbin, is a common cause. Remove all threads, clean the bobbin area, and re-thread carefully following the instructions. Ensure the fabric is not too thick for the machine.
- Puntades desiguals: Adjust the upper thread tension. Ensure the bobbin is wound evenly.
- La màquina no arrenca: Check if the power adapter is securely plugged in and the power switch is 'ON'. Ensure the foot pedal is connected correctly if using it.
For persistent issues, please refer to the contact information in the 'Warranty and Support' section.
9. Especificacions
| Característica | Especificació |
|---|---|
| Marca | HIROBOT |
| Número de model | FHSM-520A |
| Puntades incorporades | 16 |
| Puntada inversa | Yes (for stitches 1-4) |
| Control de velocitat | Adjustable (Low/High switch, Foot Pedal) |
| Maximum Fabric Thickness | Up to 2.5mm (4-6 layers) |
| Color | Verd |
| Dimensions del producte | 12D x 28W x 24H Centimeters (4.72D x 11.02W x 9.45H Inches) |
| Pes de l'article | 2 kg 200 g (4.85 lbs) |
| Fabricant | Guangzhou Hengguan Mechanical & Electrical Co., Ltd |
| Components inclosos | Màquina de cosir |

An image displaying the physical dimensions of the HIROBOT FHSM-520A sewing machine. The measurements are 27.4 cm (10.79 inches) in width, 23.75 cm (9.35 inches) in height, and 11.55 cm (4.55 inches) in depth.
10. Garantia i Suport
For warranty information, technical support, or service inquiries, please contact the manufacturer or importer directly. Keep your purchase receipt as proof of purchase.
- Fabricant: Guangzhou Hengguan Mechanical & Electrical Co., Ltd
- Importador: CHD TECH Pvt Ltd.
- Telèfon: +91 8793566784
- Correu electrònic: amzfkt@gmail.com