1. Important Safety Information
Please read all instructions carefully before assembling and using the MERACH S38 Magnetic Exercise Bike. Retain this manual for future reference.
- Consult your physician before starting any exercise program.
- Keep children and pets away from the equipment during use.
- Place the exercise bike on a flat, stable surface. Ensure adequate space around the bike.
- Inspect the equipment for worn or loose parts before each use. Do not use if any components are damaged.
- Wear appropriate exercise attire and footwear.
- The maximum user weight capacity for this bike is 300 lbs (136 kg).
- The bike is designed for users up to 6'2" (188 cm) in height.
- Do not exceed the recommended usage time or intensity.
- Keep hands and feet clear of all moving parts.
2. Product Overview
The MERACH S38 Magnetic Exercise Bike is designed for home fitness, featuring a magnetic resistance system and a comfortable saddle. It offers a stable and quiet workout experience.

Image: The Merach S38 Magnetic Exercise Bike, highlighting its 300 lbs weight capacity and dual-triangle design for stability.
Key Features:
- Magnetic Resistance System: Equipped with five 2700GS magnets for a wide range of resistance levels.
- Soft Bike Saddle: Features a dual cushion system with high-density foam and shock-absorbing springs for comfort.
- Sturdy Frame: Dual-triangle design and I-shaped structure for enhanced stability.
- Belt Drive System: Ensures quiet, smooth, and durable operation.
- Connectivity: Compatible with Merach, FantomFit, Kinomap, and Zwift applications.

Image: An internal view of the Merach S38, illustrating the smooth belt drive and strong magnetic resistance system for quiet and durable performance.
3. Setup and Assembly
The MERACH S38 bike arrives 80% pre-assembled. Follow these steps to complete the assembly. All necessary tools are included.
3.1 Unpacking
- Carefully remove all components from the packaging.
- Verify that all parts listed in the packing list are present.
- Keep packaging materials until assembly is complete in case of returns.
3.2 Attaching the Handlebars
- Locate the handlebar post and the handlebars.
- Insert the handlebar post into the main frame.
- Secure the handlebar post with the provided knob/bolt.
- Attach the handlebars to the handlebar post using the designated screws.
3.3 Attaching the Seat and Saddle
- Locate the seat post and the saddle.
- Insert the seat post into the main frame.
- Secure the seat post with the provided knob/bolt.
- Attach the 3.0 Soft Bike Saddle to the seat post. Ensure it is firmly tightened.

Image: A four-step visual guide demonstrating how to install the bike saddle onto the seat post, including tightening the fasteners.
3.4 Attaching the Pedals
- Identify the left (L) and right (R) pedals.
- Attach the right pedal (R) to the right crank arm by turning clockwise.
- Attach the left pedal (L) to the left crank arm by turning counter-clockwise.
- Tighten both pedals securely with the provided wrench.
4. Adjustments
Proper adjustment of the seat and handlebars is crucial for comfort and effective exercise.
4.1 Seat Adjustment
- Height Adjustment (4-way): Loosen the adjustment knob on the seat post. Raise or lower the seat to your desired height. Ensure your leg has a slight bend at the knee when the pedal is at its lowest point. Tighten the knob firmly.
- Horizontal Adjustment: Loosen the knob beneath the seat. Slide the seat forward or backward to achieve a comfortable distance from the handlebars. Tighten the knob firmly.
4.2 Handlebar Adjustment
- Height Adjustment (2-way): Loosen the adjustment knob on the handlebar post. Raise or lower the handlebars to a comfortable position that allows for a slight forward lean without straining your back. Tighten the knob firmly.

Image: The Merach S38 exercise bike demonstrating 4-way seat adjustment and 2-way handlebar adjustment, along with recommended inseam height (30"-37") and user height (4'8"-6'3").
5. Operating Instructions
5.1 Starting Your Workout
- Ensure the bike is stable and all adjustment knobs are tightened.
- Mount the bike carefully.
- Begin pedaling at a comfortable pace.
5.2 Adjusting Resistance
The MERACH S38 uses a magnetic resistance system. Turn the resistance knob located on the frame to increase or decrease the intensity of your workout. Turn clockwise to increase resistance, counter-clockwise to decrease.
5.3 Using the Console (if applicable)
Refer to the separate console manual for detailed instructions on its functions, including tracking time, distance, speed, and calories burned.
5.4 App Connectivity
The MERACH S38 supports connectivity with various fitness applications for an enhanced training experience.
- Merach and FantomFit: Download the official Merach or FantomFit app from your device's app store. Follow the in-app instructions to connect your bike for on-demand classes and workout tracking.
- Third-Party Apps (Kinomap, Zwift): The bike is compatible with popular third-party platforms. Download the respective app and follow their pairing instructions to connect your MERACH S38 for real-world scenic rides and competitive gaming.
6. 3.0 Soft Bike Saddle Features
The included 3.0 Soft Bike Saddle is designed for enhanced comfort during extended workouts.

Image: A detailed view of the Merach 3.0 Soft Bike Saddle, illustrating its high-density foam construction designed for extra comfort, durable support, and pain reduction.
- High-Density Foam: Provides cushioning and support.
- Shock-Absorbing Springs: Reduces impact during rides.
- Non-Slip, Wear-Resistant Leather: Ensures durability and prevents slipping.

Image: An X-ray view of the Merach bike saddle, demonstrating how its internal structure and materials work to reduce pressure and offer stable support and shock absorption during use.
7. Maintenance
Regular maintenance ensures the longevity and safe operation of your MERACH S38 Exercise Bike.
- Cleaning: Wipe down the bike with a damp cloth after each use to remove sweat and dust. Avoid abrasive cleaners.
- Inspection: Periodically check all bolts, nuts, and moving parts for tightness. Tighten any loose fasteners.
- Lubrication: The magnetic resistance system and belt drive are generally maintenance-free. Do not apply lubricants unless specifically instructed by customer support.
- Storage: Store the bike in a dry, cool place away from direct sunlight and extreme temperatures.
8. Troubleshooting
If you encounter issues with your MERACH S38, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike is unstable or wobbles. | Uneven floor surface; loose bolts. | Adjust the leveling feet on the base stabilizers. Check and tighten all assembly bolts. |
| Pedals are loose or make noise. | Pedals not tightened correctly. | Ensure pedals are tightened securely (right pedal clockwise, left pedal counter-clockwise). |
| Resistance not changing or inconsistent. | Resistance mechanism issue; knob not fully engaged. | Ensure the resistance knob is turning freely and engaging. If the issue persists, contact customer support. |
| Saddle is uncomfortable. | Incorrect adjustment; user preference. | Adjust seat height and horizontal position. Ensure the saddle is securely fastened. |
| Cannot connect to fitness apps. | Bluetooth not enabled; app issues; bike not discoverable. | Ensure Bluetooth is enabled on your device. Restart the app and the bike. Refer to the app's troubleshooting guide or contact customer support. |
9. Specifications
| Feature | Detail |
|---|---|
| Model | MERACH S38 |
| Resistance Type | Magnetic (5 x 2700GS magnets) |
| Drive System | Belt Drive |
| Max User Weight | 300 lbs (136 kg) |
| Recommended User Height | Up to 6'2" (188 cm) |
| Saddle Type | 3.0 Soft Bike Saddle (High-density foam, shock-absorbing springs) |
| Saddle Adjustment | 4-way (Height & Horizontal) |
| Handlebar Adjustment | 2-way (Height) |
| Connectivity | Merach App, FantomFit App, Kinomap, Zwift |

Image: Product dimensions of the Merach 3.0 Soft Bike Saddle, showing it is approximately 12.6 inches long and 4.1 inches wide/high.
10. Warranty and Customer Support
Your MERACH S38 Exercise Bike comes with a 1-year warranty from the date of purchase.
For any questions, assistance with setup, troubleshooting, or warranty claims, please contact MERACH customer support.
- Response Time: Our support team typically responds to inquiries by phone and email within 12 hours.
- Contact Information: Please refer to the contact details provided on the MERACH official website or your purchase documentation.
Please have your model number (S38) and proof of purchase ready when contacting support.





