1. Introduction
This manual provides essential instructions for the safe and efficient operation and maintenance of your GOYOJO Electric Strapping Tool S-16. This handheld device is designed for securing packages with PP (Polypropylene) and PET (Polyester) belts, offering precise control and efficient sealing for various packaging tasks.

Figure 1: GOYOJO Electric Strapping Tool S-16 and included accessories.
2. Safety Information
Always prioritize safety when operating any machinery. Read and understand all safety warnings before use.
- Eye Protection: Always wear appropriate eye protection to prevent injury while operating this strapping machine.
- Proper Belt Material: Use only PP (Polypropylene) or PET (Polyester) strapping belts with this tool.
- Battery Safety: Use only the specified 14.4V 3000MAH Lithium-Ion battery. Do not expose the battery to extreme temperatures or moisture.
- Avoid Over-tightening: Excessive tension can damage the strap or the packaged item. Follow operating instructions for appropriate tension settings.
- Maintenance: Disconnect the battery before performing any maintenance or changing parts.

Figure 2: Important safety warnings and product information from the packaging.
3. Product Overview
3.1 Components
Familiarize yourself with the main components of the strapping tool:

Figure 3: Labeled components of the Electric Strapping Tool S-16.
- Key Binding Keys: Used for various settings and adjustments.
- Non-slip Carrying Handle: Provides a secure grip during operation.
- Packing Key: Initiates the strapping and sealing process.
- Battery: Provides power to the tool.
- Cutting Mechanism: Cuts the strap after sealing.
- Release Handle: Releases the strap from the tool.
- Alloy Welded Plate: Essential for the friction hot melt sealing process.
3.2 Specifications
The following table outlines the technical specifications of the GOYOJO Electric Strapping Tool S-16:
| Feature | Specification |
|---|---|
| Model Number | S-16 |
| Packing Mode | Manual Control |
| Tightening Force | 60-2800N |
| Tape Sealing Form | Friction Heat Fusion |
| Cooling Time | 3 seconds |
| Machine Dimensions | 330*138*168 mm (12.99 x 5.43 x 6.61 inches) |
| Machine Weight | 2.75 kg (6.06 lbs) with battery |
| Applicable Strap Material | PET (Polyester) / PP (Polypropylene) |
| Strap Width | 13-16 mm (1/2" - 5/8") |
| Strap Thickness | 0.6-1.2 mm |
| Battery Type | Lithium battery (DC14.4V, 3000MAH) |
| Battery Charging Time | 40-90 minutes |
| Battery Life | >2000 cycles |
| Number of Straps per Charge | 300-500 (when fully charged) |
| Charger Input | AC100-245V, 50-60HZ |
| Charger Output | DC16.8V-3.0A |

Figure 4: Detailed dimensions and specifications of the S-16 tool.
4. Setup
4.1 Battery Installation and Charging
Ensure the battery is fully charged before first use. The 14.4V 3000MAH Lithium-Ion battery provides stable power and charges in 40-90 minutes.
- Insert the charged battery into the battery slot on the tool until it clicks into place.
- To remove, press the battery release button and slide the battery out.
- Connect the charger to the battery and plug it into a power outlet to charge.

Figure 5: Battery and charger details.
4.2 Strap Loading
Proper strap loading is crucial for effective operation.
- Lift the handle of the strapping tool.
- Insert the strapping belt into the tool, ensuring it passes through both the upper and lower guides.
- Make sure the strap is aligned correctly and lies flat within the guides.
Video 1: Demonstrates the process of loading the strapping belt into the GOYOJO Electric Strapping Machine.
5. Operation
5.1 Adjusting Tension and Welding Time
The tool features a digital panel for adjusting tension and welding time to suit different strap types and packaging requirements.
- Press the 'F' button to cycle between tightening force (F1) and welding time (F2) settings.
- Use the 'INC' (up arrow) and 'DEC' (down arrow) buttons to adjust the desired value.
- For tightening force, adjust according to the strap material and package stability needed.
- For welding time, adjust within the 1.0-5.0 seconds range. A 3-second cooling time is standard.
5.2 Strapping Process
Follow these steps to secure your package:
- Wrap the strapping belt around the package.
- Insert both ends of the strap into the tool, ensuring they are stacked correctly.
- Press the tensioning button (typically on the right side) to tighten the strap. The indicator light will display green during tensioning. Release the button once the desired tension is achieved.
- Press the welding button (often red) and hold it until the packaging belt is fused and cut off. The indicator light will display green or purple during welding. Release the button when the vibration timer stops automatically.
- Lift the handle and loose straps, then pull the machine to the right side and away from the straps.

Figure 6: The tightening tooth plate in action, securing the strap.

Figure 7: Visual representation of the tool's tensioning capability.
Video 2: Demonstrates the general operation of a PP PET strapping machine, including strap insertion, tensioning, and sealing.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your strapping tool.
6.1 Cleaning
- Periodically clean the tool, especially the strapping guides and sealing area, to prevent residue buildup.
- Use a dry cloth or soft brush. Do not use abrasive cleaners or solvents.
6.2 Cutter and Spring Replacement
If the cutter becomes dull or the spring is damaged, replacement may be necessary. The machine is equipped with two springs: a short spring for PET strapping and a long spring for PP strapping. Ensure the correct spring is installed for your strapping material.
- Remove Battery: Always remove the battery before performing any maintenance.
- Remove Left Cover: Unscrew and carefully remove the left cover of the tool.
- Access Cutter: Press the dissolve handle to expose the cutter and spring mechanism.
- Remove Old Cutter/Spring: Unscrew the retaining screw on the cutter and carefully remove the old cutter and spring.
- Install New Cutter/Spring: Place the new cutter and spring into position, ensuring the spring is correctly seated. Re-insert and tighten the screw, being careful not to overtighten.
- Check Movement: Verify that the cutter can slide freely up and down.
- Reassemble: Reinstall the left cover and secure it with screws. Insert the battery.
Video 3: Detailed instructions for replacing the cutter and spring on the S-16 Electric Baler.
7. Troubleshooting
If you encounter issues with your GOYOJO Electric Strapping Tool, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Strap not sealing properly | Incorrect welding time setting; Worn sealing plate; Incorrect strap material. | Adjust welding time (F2) on the digital panel. Check and clean the sealing plate. Ensure correct PP/PET strap is used. |
| Strap not tightening sufficiently | Low battery; Incorrect tension setting; Strap slipping. | Charge the battery. Adjust tightening force (F1) on the digital panel. Ensure strap is properly inserted and not oily/dirty. |
| Strap jamming in the tool | Improper strap insertion; Debris in the mechanism. | Ensure strap is inserted flat and correctly. Remove battery and inspect for any debris, then clean. |
| Tool not powering on | Battery not installed correctly; Battery discharged. | Ensure battery is fully inserted. Charge the battery. |
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation included with your purchase or contact GOYOJO customer service directly. Keep your purchase receipt as proof of purchase.