1. Úvod
This manual provides comprehensive instructions for the assembly and operation of the stemedu MOC-103739 4-speed manual transmission gearbox building block set. Designed for enthusiasts aged 14 and above, this high-tech gearbox allows for intricate mechanical construction and exploration of power functions. The set includes various building blocks to construct a functional gearbox, with options to integrate an M Motor and battery box for motorized operation.
2. Důležitá bezpečnostní varování
- Nebezpečí udušení: This product contains small parts and is not suitable for children under 3 years of age. Keep all components away from young children to prevent accidental ingestion.
- Upozornění na chemickou expozici: This product may expose you to chemicals, including phthalates (DEHP), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.
- Bezpečnost baterie (pokud existuje): If using an M Motor and battery box, ensure batteries are inserted correctly according to polarity markings. Do not mix old and new batteries, or different types of batteries. Remove batteries if the product is not used for an extended period.
- Shromáždění: Adult supervision is recommended during assembly, especially for younger users, to ensure correct construction and prevent damage to parts.
3. Obsah balení
The contents of your package may vary depending on the specific bundle purchased. Please verify your order against the list below:
- Option: Only Gearbox
- 1x MOC 4-Speed Gearbox (unassembled building blocks)
- Option: Gearbox and M Motor
- 1x MOC 4-Speed Gearbox (unassembled building blocks)
- 1x M Motor
- Option: Gearbox, M Motor, and Battery Box (Set 1 or Set 2)
- 1x MOC 4-Speed Gearbox (unassembled building blocks)
- 1x M Motor
- 1x Battery Box (AA or AAA type, batteries not included)


4. Specifikace
| Atribut | Detail |
|---|---|
| Název značky | stemedu |
| Číslo modelu | MOC-103739 |
| Typ | BLOCKS (Building Blocks) |
| Materiál | Plast |
| Je Elektrický | No Battery (requires external power functions like M Motor and Battery Box) |
| Velikost bloku | Mikro stavební blok, Velký stavební blok (>1 cm) |
| Dálkové ovládání | Yes (compatible with remote control systems, if M Motor and Battery Box are used) |
| Osvědčení | CE |
| Pohlaví | Unisex |
| Původ | pevninská Čína |
| Doporučený věk | 14+ let |
| Vysoce znepokojená chemikálie | None (excluding California Proposition 65 warning) |
5. Montáž a nastavení
This product consists of loose building blocks that require assembly. While a detailed step-by-step guide is typically provided with the physical product, the general process involves connecting the various gears, pins, and beams to form the 4-speed transmission gearbox.
5.1 General Assembly Steps:
- Rozbalte komponenty: Carefully open the package and lay out all the building blocks. It is recommended to sort them by type (gears, pins, beams, connectors) to facilitate assembly.
- Follow Provided Instructions: Refer to the specific assembly instructions or diagrams included in your physical product package for detailed, step-by-step guidance.
- Construct the Gearbox Frame: Begin by building the main structural frame of the gearbox using the larger beams and connectors.
- Install Gears and Axles: Carefully insert the axles and attach the various gears, ensuring they mesh correctly and can rotate freely. Pay close attention to the placement of the shifting mechanism components.
- Assemble Shifting Mechanism: Construct the lever and internal components that allow for shifting between the four speeds.
- Connect M Motor (if included): If your bundle includes an M Motor, connect it to the designated input point on the gearbox. Ensure the connection is secure.
- Connect Battery Box (if included): If your bundle includes a battery box, insert the required AA or AAA batteries (not included) according to the polarity markings. Then, connect the battery box to the M Motor.


6. Provoz
Once assembled, the 4-speed manual transmission gearbox allows you to manually shift between different gear ratios. If an M Motor and battery box are connected, the gearbox can be powered, demonstrating the effect of different gears on speed and torque.
6.1 Shifting Gears:
The gearbox features a shifting lever that allows you to engage one of four distinct speeds. Observe the labels and arrows on the shifting mechanism for proper engagement:

- Engage 1st Gear: Move the shifting lever to the position marked "1st". This typically provides the highest torque and lowest speed.
- Engage 2nd Gear: Move the shifting lever to the position marked "2nd". This offers a balance between torque and speed.
- Engage 3rd Gear: Move the shifting lever to the position marked "3rd". This provides higher speed and lower torque compared to 1st and 2nd.
- Engage 4th Gear: Move the shifting lever to the position marked "4th". This typically provides the highest speed and lowest torque.
Ensure the gears fully engage before applying power (if using an M Motor) to prevent damage to the gears.
6.2 Motorized Operation (with M Motor and Battery Box):
- Zapnutí: Turn on the battery box. The M Motor should begin to rotate.
- Observe Gear Changes: As you shift the gearbox lever, observe how the output shaft's speed and rotational force change.
- Dálkové ovládání (pokud je k dispozici): If using a compatible remote control system, you can control the M Motor's speed and direction remotely.
7. Údržba
- Čištění: Use a soft, dry cloth to gently wipe down the building blocks and assembled gearbox. Avoid using harsh chemicals or abrasive materials.
- Skladování: Store the gearbox and loose parts in a cool, dry place away from direct sunlight and extreme temperatures to prevent material degradation.
- Inspekce: Periodically inspect the gears and connections for any signs of wear or damage. Replace any broken or worn-out parts to maintain optimal performance.
- Vyjmutí baterie: If the product is not going to be used for an extended period, remove batteries from the battery box to prevent leakage and corrosion.
8. Řešení problémů
- Neřadí se plynule:
- Ensure all pins and axles are correctly inserted and not bent.
- Check for any misaligned gears or obstructions.
- Verify that the shifting mechanism is assembled correctly and moves freely.
- M Motor Not Working:
- Check if the battery box is switched ON.
- Ujistěte se, že jsou baterie správně vloženy a nejsou vybité.
- Verify that the M Motor is securely connected to the battery box and the gearbox.
- Inspect the motor's wires for any damage.
- Nepadnoucí díly:
- Dvakrát zkontrolujte montážní pokyny, abyste se ujistili, že pro každý krok používáte správné díly.
- Apply gentle, even pressure when connecting parts. Do not force them, as this can cause damage.
9. Uživatelské tipy
Nebyly k dispozici žádné konkrétní tipy pro uživatele.views or Q&A for this product. However, general tips for building block enthusiasts include:
- Uspořádat díly: Before starting assembly, sort all parts by color, size, or type to make the building process smoother.
- Test funkčnosti: Periodically test the moving parts and shifting mechanism during assembly to catch any errors early.
- Kreativní expanze: This MOC gearbox can be integrated into larger custom creations. Experiment with different chassis designs or power applications.
10. Záruka a podpora
For any questions, concerns, or support regarding your stemedu MOC-103739 4-speed manual transmission gearbox, please contact the seller or manufacturer directly through your purchase platform. Please have your order details and model number (MOC-103739) ready when seeking assistance.





