GYMAX 12FT Internal Net
GYMAX 12FT Trampoline with Enclosure Net and Basketball Hoop User Manual
Model: 12FT Internal Net
1. Introduction
Thank you for choosing the GYMAX 12FT Trampoline with Enclosure Net and Basketball Hoop. This manual provides essential information for the safe assembly, operation, and maintenance of your trampoline. Please read it thoroughly before use and retain it for future reference.
2. Safety Information
Your safety is paramount. This trampoline is designed and manufactured to ASTM standards to ensure a reliable jumping experience. Always follow these safety guidelines:
- Adult supervision is required at all times.
- Only one person should jump at a time to prevent collisions.
- Do not attempt somersaults or other dangerous maneuvers without proper training and supervision.
- Ensure the enclosure net is properly secured before each use.
- Inspect the trampoline for any damage or wear before each use. Do not use if damaged.
- Keep the area around the trampoline clear of obstacles.
- Do not hang on the basketball rim or enclosure poles.
- Maximum weight capacity: 400 lbs.
- Always use the provided ladder for safe entry and exit.
For additional safety, the trampoline features a 6ft safety net and 10mm anti-collision EPE foam covers on the poles.
3. Package Contents
The GYMAX Trampoline is delivered in multiple boxes. Please verify all components are present before assembly.
- Outdoor Trampoline Frame and Legs
- Jumping Mat (8-row stitched PP, UV tested)
- Springs (72 pcs for 12FT model)
- Safety Pad
- Enclosure Net (6ft height)
- Enclosure Poles with Foam Covers
- 2-Step Ladder
- Basketball Hoop Set (Hoop, Basketball, Pump)
- User Guide
- Installation Tools

Figure 1: Illustration of package contents and easy assembly features like self-locking system and included tools.
4. Setup and Assembly
Assembly requires at least two adults. Follow the step-by-step instructions provided in the included User Guide. A general overview is provided below:
- Prepare the Area: Choose a flat, level surface free from obstacles. Ensure adequate clearance around the trampoline.
- Assemble the Frame: Connect the steel frame sections and attach the W-shaped legs. The self-locking system requires no screws for initial frame assembly.
- Attach the Jumping Mat: Carefully attach the springs to the jumping mat and the frame. Pro Tip: When attaching springs, always work across from each other (e.g., 12 o'clock, then 6 o'clock, then 3 o'clock, then 9 o'clock) to ensure even tension and prevent frame warping. Do not attach springs in a circular pattern.
- Install the Safety Pad: Cover the springs and frame with the safety pad.
- Erect the Enclosure Poles: Attach the foam-covered enclosure poles to the frame.
- Install the Enclosure Net: Secure the enclosure net to the poles and the jumping mat. Ensure the zipper and buckles are functional.
- Attach the Ladder: Secure the 2-step ladder to the trampoline frame.
- Mount the Basketball Hoop: Attach the basketball hoop to the designated enclosure pole.
Video 1: Official Gymax video demonstrating the assembly process and features of the trampoline with basketball hoop. This video highlights the ease of setup and various safety components.

Figure 2: The integrated basketball hoop offers additional recreational activity. Note: Do not dunk or hang on the rim.
5. Operating Instructions
To ensure a fun and safe experience:
- Always enter and exit the trampoline using the provided ladder.
- Ensure the enclosure net zipper is fully closed and buckles are secured before jumping.
- Jump in the center of the mat for optimal bounce and safety.
- Do not wear shoes on the jumping mat.
- Do not bring sharp objects onto the trampoline.
- For the basketball hoop, use the included soft basketball. Avoid dunking or hanging on the rim to prevent damage and injury.

Figure 3: Children enjoying the trampoline, highlighting the safety enclosure and padded poles for protection.
6. Maintenance
Regular maintenance will extend the life of your trampoline and ensure continued safety:
- Inspect Regularly: Check the frame, springs, jumping mat, safety pad, enclosure net, and poles for any signs of wear, tears, rust, or damage.
- Clean the Mat: Use mild soap and water to clean the jumping mat. Rinse thoroughly and allow to air dry.
- Check Connections: Ensure all bolts, nuts, and connections are tight and secure.
- Weather Protection: While the trampoline features hot-dip galvanized steel for weather resistance and a UV-tested jumping mat, consider covering it during extreme weather conditions or prolonged periods of non-use to prolong its lifespan.
- Replace Damaged Parts: Do not use the trampoline if any part is damaged. Contact customer support for replacement parts.

Figure 4: Illustration of the trampoline's durable construction, featuring hot-dip galvanized steel pipes and stable W-shaped legs.

Figure 5: The trampoline is designed with weather-resistant materials, including UV protection for the jumping mat and enclosure net.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Uneven Frame / Mat Sagging | Improper spring installation; uneven ground. | Ensure springs were installed across from each other. Verify the trampoline is on a level surface. |
| Net not taut | Loose connections; improper installation. | Check all net attachments and pole connections. Ensure the net is tightened at the top. |
| Reduced Bounce | Worn springs; damaged jumping mat. | Inspect springs for stretching or damage. Check the jumping mat for tears. Replace worn components. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | GYMAX |
| Model Name | Kids Trampoline with Basketball Set |
| Frame Size | 12 feet (also available in 14FT, 15FT, 16FT) |
| Product Dimensions (12FT) | 144"L x 144"W x 108"H |
| Shape | Round |
| Frame Material | Alloy Steel (Hot-dip galvanized) |
| Jumping Mat Material | Polypropylene (PP), 8-row stitched, 5000H UV tested |
| Springs (12FT model) | 72 pcs, high quality, rust-resistant |
| Maximum Weight Recommendation | 400 Pounds |
| Safety Net Height | 6 ft |
| Safety Features | ASTM Approved, Internal Enclosure Net, 10mm Anti-Collision EPE Foam Cover, 3-Layer Safety Pad, Double Zipper with Buckles |
| Included Accessories | Basketball Hoop Set, 2-Step Ladder |

Figure 6: Size chart detailing dimensions and maximum load for various GYMAX trampoline models.
9. Warranty and Support
This GYMAX Trampoline comes with a 90-day warranty. For warranty claims, replacement parts, or any product-related inquiries, please contact GYMAX customer support through your original retailer or the official GYMAX website.
Please retain your proof of purchase for warranty validation.
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