Introduction
Welcome to the Keiser M3i Studio Plus Indoor Bike user manual. This guide provides essential information for the safe and effective use, assembly, operation, and maintenance of your new indoor cycling bike. The M3i Studio Plus is designed to deliver a premium cycling experience with advanced features like the Studio Display, Ride by Color feedback, and extensive connectivity options. Please read this manual thoroughly before initial use and retain it for future reference.

Important Safety Information
Always consult with a physician before beginning any exercise program. Improper or excessive training can result in serious injury. Adhere to the following safety guidelines:
- Ensure all bolts and nuts are securely tightened before each use.
- Keep children and pets away from the bike during operation.
- Place the bike on a level, stable surface.
- Wear appropriate athletic footwear and clothing.
- Do not exceed the maximum user weight of 350 pounds (158 kg).
- Stop exercising immediately if you feel faint, dizzy, or experience pain.
- Perform regular maintenance as described in this manual.
Product Components
The Keiser M3i Studio Plus Indoor Bike consists of several key components designed for optimal performance and user comfort.
- Frame: Durable alloy steel and aluminum construction.
- Flywheel: Aluminum flywheel with magnetic resistance system.
- Studio Display: Integrated console providing real-time metrics.
- Handlebars: Curve handlebars designed for various riding positions.
- Seat: Adjustable seat for height and fore/aft positioning.
- Pedals: Standard pedals with toe cages.
- Resistance Lever: Provides 72 levels of magnetic resistance.

Setup and Assembly
The Keiser M3i Studio Plus Indoor Bike requires minimal assembly. Follow these steps carefully:
- Unpack Components: Carefully remove all parts from the packaging. Verify all components are present against the packing list.
- Attach Stabilizer Bars: Secure the front and rear stabilizer bars to the main frame using the provided bolts and tools. Ensure they are firmly tightened.
- Install Seat Post: Insert the seat post into the frame and secure it with the adjustment knob. Do not overtighten.
- Attach Seat: Mount the seat onto the seat post.
- Install Handlebar Post: Insert the handlebar post into the frame and secure it with its adjustment knob.
- Attach Handlebars: Secure the handlebars to the handlebar post.
- Attach Pedals: Identify the left (L) and right (R) pedals. Thread the left pedal counter-clockwise and the right pedal clockwise into the crank arms. Tighten securely with a wrench.
- Final Check: Inspect all connections to ensure they are tight and secure before first use.
Operating Instructions
A. Studio Display Features
The Studio Display provides comprehensive workout data. It is powered by a pedal-driven generator, requiring no batteries.

The display offers four different modes:
- Speed Mode: Displays current speed, distance, and time.
- Power Zones Mode: Shows power output in watts and personalized power zones (Ride by Color).
- Heart Rate Zones Mode: Displays heart rate and personalized heart rate zones (requires compatible heart rate monitor).
- METs Mode: Measures Metabolic Equivalents of Task.
B. Adjustments (Seat and Handlebars)
Proper bike fit is crucial for comfort and performance. The M3i Studio Plus accommodates riders from 4'10" to 7'.
- Seat Height: Loosen the seat height adjustment knob, raise or lower the seat until your leg has a slight bend at the knee when the pedal is at its lowest point. Tighten the knob securely.
- Seat Fore/Aft: Loosen the seat fore/aft adjustment knob beneath the seat. Slide the seat forward or backward to align your knee over the pedal spindle when the crank arm is horizontal. Tighten the knob.
- Handlebar Height: Loosen the handlebar height adjustment knob. Adjust the handlebars to a comfortable height, typically level with or slightly higher than the seat for beginners, or lower for more aggressive riding. Tighten the knob.
C. Resistance Control
The bike features 72 levels of magnetic resistance, controlled by the resistance lever located on the frame. Move the lever up to increase resistance and down to decrease it. This allows for precise control over your workout intensity.
D. Connectivity
The M3i Studio Plus supports Bluetooth FTMS, CSCS, and CPS, as well as ANT+ connectivity, allowing it to connect with various fitness apps and heart rate monitors.

Refer to your specific app's instructions for pairing with the Keiser M3i Studio Plus.
Maintenance and Care
Regular maintenance ensures the longevity and optimal performance of your Keiser M3i Studio Plus Indoor Bike. The bike is designed to be virtually maintenance-free.
- 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 and wear. Tighten any loose fasteners.
- Lubrication: The magnetic resistance system and poly-V belt drive system require no lubrication.
- Storage: Store the bike in a dry, climate-controlled environment away from direct sunlight.
Troubleshooting
This section addresses common issues you might encounter with your Keiser M3i Studio Plus Indoor Bike.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display not turning on | Not pedaling fast enough; Super capacitor not charged. | Pedal at a moderate pace for a few seconds to activate the generator and charge the super capacitor. |
| Resistance feels inconsistent | Resistance lever not fully engaged; Magnetic system issue. | Ensure the resistance lever is firmly set to a specific level. If issue persists, contact customer support. |
| Bike is unstable or wobbles | Not on a level surface; Stabilizer feet not adjusted. | Adjust the leveling feet on the stabilizer bars to ensure the bike is stable on the floor. |
| Difficulty connecting via Bluetooth/ANT+ | Device not in pairing mode; Interference; Outdated app. | Ensure your device's Bluetooth/ANT+ is on and the bike is active. Move closer to the bike. Update your fitness app. |
Technical Specifications
| Feature | Specification |
|---|---|
| Model Name | M3i Studio Plus Indoor Bike |
| Brand | Keiser |
| Dimensions (D x W x H) | 51" x 26" x 44" (129.5 cm x 66 cm x 111.8 cm) |
| Item Weight | 91 Pounds (41.3 kg) |
| Maximum User Weight | 350 Pounds (158 kg) |
| Resistance Mechanism | Magnetic |
| Number of Resistance Levels | 72 |
| Drive System | Poly-V Belt |
| Power Source | Pedal-powered Generator |
| Connectivity | Bluetooth FTMS, CSCS, CPS, ANT+ |
| Material | Aluminum Flywheel, Alloy Steel |
| Color | Raven Black |
| UPC | 810047790365 |
Warranty Information
Keiser products are manufactured to the highest standards and are backed by a limited warranty. Specific warranty details, including coverage periods for frame, parts, and labor, are provided with your purchase documentation. Please retain your proof of purchase for warranty claims. The warranty typically covers defects in materials and workmanship under normal use and service.
Customer Support
For technical assistance, parts, or service inquiries, please contact Keiser Customer Support. Have your model number and serial number ready when contacting support.
Keiser Corporation
Website: www.keiser.com
Refer to the website for current contact information and support resources.





