MOSUNY 917T
MOSUNY 2025 Foldable Stationary Bike (Model 917T) Instruction Manual
Your guide to safe and effective use of your MOSUNY Exercise Bike.
Introduction
Thank you for choosing the MOSUNY 2025 Foldable Stationary Bike. This manual provides essential information for the safe assembly, operation, maintenance, and troubleshooting of your exercise bike. Please read it thoroughly before use and keep it for future reference.
The MOSUNY 2025 Foldable Stationary Bike is designed for home fitness, featuring 16 levels of magnetic resistance, a comfortable seat with backrest, and a compact foldable design for easy storage. It includes an LCD monitor to track your workout data and supports users up to 350 lbs.
1. Setup and Assembly
Your MOSUNY Foldable Stationary Bike comes 70% pre-assembled. The average assembly time is approximately 30 minutes. Please follow these steps carefully.
1.1 Unpacking and Parts Identification
Carefully remove all components from the packaging. Lay them out and identify each part using the included parts list (refer to the video for visual guidance).
Video 1: Assembly Instructions (0:00 - 1:59). This video demonstrates the complete assembly process for the MOSUNY Foldable Stationary Bike, including unpacking, attaching components, and final checks.
1.2 Attaching Stabilizer Bars
Attach the front and rear stabilizer bars to the main frame using the provided bolts and wrenches. Ensure they are securely tightened to provide stability.

Image 1: Illustration of the stabilizer bars with transport wheels and cushion height adjustment mechanism.
1.3 Assembling the Seat and Backrest
Secure the seat cushion to the seat post and then attach the backrest. Ensure all bolts are firmly tightened for user safety and comfort.

Image 2: Close-up of the ultra-soft seat and comfortable backrest, highlighting ergonomic design and safety handle.
1.4 Attaching Pedals
Identify the left (L) and right (R) pedals. Screw them into the corresponding crank arms. The left pedal screws counter-clockwise, and the right pedal screws clockwise. Tighten them securely.
1.5 Installing the Handlebar and Monitor
Attach the handlebar to the main frame. Connect the sensor wires from the main frame to the LCD monitor. Secure the monitor to the handlebar. Insert batteries into the monitor if not pre-installed.

Image 3: The LCD monitor displaying various tracking data such as scan, pulse, calories, time, speed, distance, and total distance.
1.6 Final Checks
Before first use, ensure all bolts and nuts are tightened. Check that the seat and handlebar are stable. Verify that the pedals rotate smoothly and the resistance knob functions correctly.
2. Operating Instructions
2.1 Adjusting Seat Height
The seat height is adjustable to 8 levels, suitable for users between 4.4 ft and 6.6 ft. Loosen the adjustment knob below the seat, raise or lower the seat to your desired height, and then tighten the knob securely. Your knees should have a slight bend at the bottom of the pedal stroke.
2.2 Adjusting Magnetic Resistance
The bike features 16 levels of adjustable magnetic resistance. Turn the tension control knob located on the main frame clockwise to increase resistance (HIGH) and counter-clockwise to decrease resistance (LOW). Adjust the resistance to match your desired workout intensity.

Image 4: The resistance adjustment knob with settings from 1 to 16, indicating different exercise intensities.
2.3 Using the LCD Monitor
The LCD monitor tracks your fitness performance, including time, speed, distance, calorie consumption, and heart rate (via pulse sensors on the handlebars). Use the "MODE" button to cycle through different display functions. The monitor also includes a mobile phone holder for convenience.
Video 2: Product Usage and Features (0:00 - 0:54). This video demonstrates the bike in use, highlighting the adjustable resistance, multi-functional monitor, and comfortable seating positions.
2.4 Folding and Storage
To fold the bike for storage, remove the locking pin near the base of the frame, then carefully fold the bike inwards. Reinsert the pin to secure it in the folded position. The integrated transport wheels allow for easy movement and storage in minimal space.

Image 5: Visual guide for unfolding and folding the exercise bike between cycling and storage modes, demonstrating its space-saving design.
3. Maintenance
- Cleaning: Wipe down the bike regularly with a damp cloth to remove sweat and dust. Avoid abrasive cleaners.
- Lubrication: The magnetic resistance system is generally maintenance-free. No lubrication is required for the flywheel or resistance mechanism.
- Bolt Check: Periodically check all bolts and nuts to ensure they are tight. Loose components can affect performance and safety.
- Pedal Straps: Inspect pedal straps for wear and tear. Replace if damaged.
4. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike is unstable or wobbles. | Loose bolts or uneven surface. | Ensure all assembly bolts are tightened. Place the bike on a flat, stable surface. Adjust the leveling caps on the stabilizer bars if present. |
| Resistance is not changing. | Resistance cable disconnected or damaged. | Check the connection of the resistance cable to the tension control knob and the flywheel mechanism. If damaged, contact customer support. |
| LCD monitor not displaying data. | Batteries are dead or sensor wires are disconnected. | Replace batteries in the monitor. Ensure all sensor wires are securely connected to the monitor and the main frame. |
| Unusual noise during operation. | Loose components or friction. | Check all bolts and nuts for tightness. The magnetic resistance system is designed for quiet operation; if noise persists, contact customer support. |
5. Specifications
| Feature | Detail |
|---|---|
| Brand | MOSUNY |
| Model Number | 917T |
| Resistance Levels | 16 (Magnetic) |
| Operation Mode | Manual |
| Power Source | Pedal-powered (non-electric) |
| Maximum Weight Capacity | 350 Pounds |
| Adjustable Seat Height | 8 levels (suitable for 4.4-6.6 ft height) |
| Special Features | 10DB Near-silent Riding, Adjustable Resistance Level, Adjustable Seat, Foldable, LCD Display, Mobile Phone Holder |
| Included Components | Exercise Bike (main unit), Assembly Tools |
| Item Weight | 20 kg |
| Material | Alloy Steel |
| UPC | 762744424909 |

Image 6: Detailed product dimensions and specifications, including suitable height range and maximum weight capacity.
6. Warranty and Support
MOSUNY provides a 5-year free parts replacement warranty for this product. Additionally, we offer 12 months of free after-sales service to ensure your satisfaction.
If you have any questions, require assistance with assembly, operation, or encounter any issues, please do not hesitate to contact our customer support team. Our factory engineers can provide professional guidance, including video support if needed.
Contact Information:
- Email: mosunysupport@163.com
- Please refer to your purchase documentation for additional contact methods.
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