1. Safety Information
Before using the WENOKER Stationary Exercise Bike JC309, please read and understand all safety instructions. Proper use and maintenance are crucial for your safety and the longevity of the equipment.
- Maximum User Weight: This exercise bike is designed to support a maximum user weight of 350 pounds (158.76 kg). Do not exceed this limit.
- Stable Placement: Always place the exercise bike on a flat, stable surface. Ensure adequate clear space around the bike for safe operation.
- Pre-Workout Check: Before each use, inspect the bike for any loose parts, damaged components, or unusual noises. Do not use the bike if any issues are found.
- Consult a Physician: Consult with a physician before starting any new exercise program, especially if you have pre-existing health conditions.
- Children and Pets: Keep children and pets away from the exercise bike during operation.
- Proper Attire: Wear appropriate athletic clothing and footwear. Avoid loose clothing that could get caught in moving parts.
- Emergency Stop: Familiarize yourself with the emergency stop function (red resistance knob) to quickly stop the flywheel if needed.

Image: The WENOKER Exercise Bike demonstrating its solid construction and a maximum weight capacity of 350 lbs, ensuring stability and safety during use.
2. Setup and Assembly
The WENOKER Stationary Exercise Bike JC309 arrives 70% pre-assembled, making the final setup process straightforward. A tools pack is included to assist with assembly.
Estimated Assembly Time: Approximately 20 minutes.
Assembly Steps:
- Unpack Components: Carefully remove all parts from the packaging and lay them out. Verify all components are present against the included parts list.
- Attach Stabilizers: Secure the front and rear stabilizer bars to the main frame using the provided bolts and tools. Ensure they are tightened securely for stability.
- Install Pedals: Identify the left (L) and right (R) pedals. Thread the left pedal counter-clockwise and the right pedal clockwise into their respective crank arms. Tighten firmly.
- Mount Seat Post and Seat: Insert the seat post into the frame and adjust to a comfortable height. Attach the seat to the seat post and secure it.
- Install Handlebar Post and Handlebars: Insert the handlebar post into the frame. Attach the multi-grip handlebars to the post and secure them.
- Connect Digital Display: Connect the sensor wires from the main frame to the digital display unit. Mount the display onto the handlebar post.
- Final Check: Double-check all bolts, nuts, and connections to ensure they are tight and secure before first use.
3. Operating Instructions
3.1 Digital Display Functions
The upgraded digital display allows you to track your workout progress in real-time. It typically shows the following metrics:
- SCAN: Automatically cycles through all metrics.
- TIME: Duration of your current workout.
- SPD (Speed): Your current cycling speed.
- DST (Distance): Distance covered during your current workout.
- CAL (Calories): Estimated calories burned.
- ODO (Odometer): Total accumulated distance.

Image: The digital display unit, illustrating its capability to track various exercise data points for customized workout planning.
3.2 Resistance Adjustment
The WENOKER Exercise Bike features an unlimited micro-resistance adjustment range, allowing you to customize your workout intensity. The red knob located on the frame controls the resistance.
- Increase Resistance: Turn the resistance knob clockwise to increase the pedaling difficulty.
- Decrease Resistance: Turn the resistance knob counter-clockwise to decrease the pedaling difficulty.
- Emergency Stop: Press the resistance knob down firmly to engage the emergency brake and quickly stop the flywheel.

Image: The red resistance adjustment knob, demonstrating its unlimited micro-resistance range suitable for various training intensities, from warm-up to muscle strengthening.
3.3 Multi-Grips Handlebar
The multi-grips handlebar provides various hand positions to accommodate different riding styles and comfort levels during your workout.
- Seated Riding: A relaxed grip for steady-state cardio.
- Speeding Climb: A higher grip position for simulating uphill climbs.
- Sprints: A lower, more aggressive grip for intense bursts of speed.
- Seated Flat: A neutral grip for comfortable, sustained cycling.

Image: A user illustrating the different multi-grip handlebar positions available on the WENOKER bike, allowing for diverse riding experiences and targeting different muscle groups.
3.4 Silent Belt Drive System
The WENOKER Exercise Bike utilizes an inertia-enhanced flywheel, ABS material belt pulley, and industrial-grade bearings with a belt drive mechanism. This design ensures a smooth and quiet pedaling experience, allowing you to exercise without disturbing others.

Image: A detailed view of the exercise bike's smooth belt drive system, emphasizing its ultra-quiet operation for a peaceful workout environment.
4. Adjustments
The WENOKER Exercise Bike is fully adjustable to accommodate users of various heights and preferences, ensuring a comfortable and effective workout.
- Seat Height Adjustment: Loosen the adjustment knob on the seat post, slide the seat to your desired height, and tighten the knob securely. Ensure your leg has a slight bend at the knee when the pedal is at its lowest point.
- Seat Fore/Aft Adjustment: Loosen the knob under the seat to slide the seat forward or backward. Adjust until your knees are aligned with the balls of your feet when the pedals are horizontal. Tighten the knob securely.
- Handlebar Height Adjustment: Loosen the adjustment knob on the handlebar post, raise or lower the handlebars to a comfortable position, and tighten the knob securely.
Recommended User Height:
This bike is suitable for users with a height range of approximately 4.7 ft to 6.3 ft.

Image: A visual representation of the fully adjustable seat and handlebar, indicating minimum and maximum height settings to fit a wide range of users.
5. Maintenance
Regular maintenance ensures the optimal performance and longevity of your WENOKER Exercise Bike.
- Cleaning: Wipe down the bike with a damp cloth after each use to remove sweat and dust. Avoid abrasive cleaners or solvents.
- Check Connections: Periodically inspect all bolts, nuts, and moving parts for tightness. Tighten any loose connections to prevent noise and ensure stability.
- Belt Drive System: The belt drive system is designed for low maintenance. Keep the area around the belt clean and free of debris. No lubrication is typically required for the belt.
- Pedals and Straps: Ensure pedal straps are in good condition and footstraps are securely fastened before each ride.
- Storage: Store the bike in a dry, cool place away from direct sunlight and extreme temperatures.
6. Troubleshooting
If you encounter any issues with your WENOKER Exercise Bike, refer to the following common troubleshooting tips:
- Bike is Unstable/Wobbles: Ensure the bike is on a flat surface. Check and adjust the leveling feet on the stabilizer bars. Verify all assembly bolts are securely tightened.
- Unusual Noises (Squeaking/Grinding): Check all connections for tightness. Ensure pedals are securely fastened. Inspect the flywheel and belt area for any obstructions. If the noise persists, contact customer service.
- Digital Display Not Working: Check if the sensor wires are properly connected to the display unit. Ensure batteries (if applicable) are correctly installed and not depleted.
- Resistance Not Changing: Verify the resistance knob is functioning correctly. Ensure it turns smoothly and engages the resistance mechanism.
If these steps do not resolve the issue, please contact WENOKER Customer Service for further assistance.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | JC309 |
| Brand | Wenoker |
| Product Dimensions (D x W x H) | 105D x 19W x 76H Centimetres (41.3D x 7.5W x 29.9H Inches) |
| Item Weight | 29.44 kg (64.9 lbs) |
| Maximum Weight Recommendation | 158.76 kg (350 lbs) |
| Material | Alloy Steel |
| Drive System | Belt |
| Resistance Mechanism | Friction |
| Number of Resistance Levels | Unlimited (Micro-adjustment) |
| Power Source | Battery Powered (for display) |
| Special Features | Adjustable Footstrap, Heavy Duty, Quiet Indoor Cycling Bike, Water Bottle Holder, Adjustable Seat, Sturdy Frame |
8. Warranty and Support
WENOKER is committed to providing quality products and excellent customer service.
- Warranty: WENOKER provides free parts replacement for 12 months from the date of purchase. This warranty covers manufacturing defects and component failures under normal use.
- Customer Support: If you have any questions regarding assembly, operation, maintenance, or require technical assistance, please do not hesitate to contact WENOKER Customer Service.
- Professional Guidance: Our factory engineers can provide professional guidance, including video support, to help resolve any issues you may encounter.
For support, please refer to the contact information provided with your purchase or visit the official Wenoker store on Amazon.





