Important Safety Instructions
Read all instructions before using this appliance.
- Always keep the safety key attached to your clothing during operation.
- Ensure the treadmill is placed on a flat, stable surface.
- Keep children and pets away from the treadmill during operation.
- Consult a physician before starting any exercise program.
- Do not operate if the power cord is damaged.
- Use the extended handrails for support and balance, especially for seniors or during rehabilitation.
Product Overview
The GYMAX Walking Treadmill is designed for home use, featuring a 2.5 HP motor, an LED display, and a robust design suitable for users up to 300 lbs. It includes extended handrails for enhanced safety and stability.

Figure 1: GYMAX Walking Treadmill with an elderly user demonstrating its use. The treadmill features long, supportive handrails and a clear console.
Key Features
- 2.5 HP Motor: Provides smooth and quiet operation with a speed range of 0.5-7.5 MPH.
- Extended Handrails: Offers comprehensive protection and support, ideal for seniors or rehabilitation.
- 7-Layer Anti-Slip Running Belt: Combined with 6 rubber shock absorbers, minimizes impact on joints.
- LED Display: Tracks real-time exercise data including speed, distance, time, calories, steps, and heart rate.
- 15 Preset Programs: Offers a variety of workout routines.
- Device & Cup Holders: Conveniently holds personal devices and beverages.
- Foldable Design & Wheels: Detachable handrails and built-in transportation wheels for easy storage and movement.
Setup and Assembly
The GYMAX Walking Treadmill requires some assembly. Please follow the included instruction manual for detailed steps.
Unpacking
- Carefully remove all components from the packaging.
- Verify all included components are present: Treadmill unit, Silicone Treadmill Lubricant, Safety Key, Instruction Manual.
- Place the main treadmill frame on a clear, level surface.
Assembly Steps
Refer to the separate assembly guide provided in the package for detailed, step-by-step instructions. Ensure all bolts and nuts are securely tightened before first use.

Figure 2: The treadmill's compact folded size (8.5" thickness) and transportation wheels for easy storage and movement. The image also highlights the detachable handrails.
Operating Instructions
Powering On
- Plug the power cord into a grounded 110-120V outlet.
- Attach the safety key to the designated slot on the console and clip the other end to your clothing. The treadmill will not operate without the safety key in place.
- The LED display will illuminate.
Using the Console

Figure 3: Close-up of the treadmill's console, illustrating the LED display, integrated device and bottle holders, pulse sensors on the handrails, and convenient shortcut keys for operation.
The LED display provides real-time feedback on:
- Speed: Current walking/running speed.
- Time: Duration of your workout.
- Distance: Total distance covered.
- Calorie: Estimated calories burned.
- Step: Number of steps taken.
- Heart Rate: Measured via pulse sensors on handrails.
Starting a Workout
- Press the START button on the console or handrail. The belt will begin to move at a low speed.
- Use the SPEED +/- buttons on the console or handrails to adjust your desired speed (0.5-7.5 MPH).
- To use preset programs, press the PROGRAM button to cycle through the 15 available programs. Select your desired program and press START.
- For heart rate monitoring, grip the pulse sensors on the handrails firmly. Your heart rate will display on the LED screen.

Figure 4: The treadmill offers adjustable speed settings suitable for various fitness levels: 0.5-2.5 MPH for walking, 2.2-5.5 MPH for jogging, and 5.5-7.5 MPH for running.
Stopping a Workout
- Press the STOP button on the console or handrail. The belt will gradually slow down and stop.
- Alternatively, pull the safety key from the console for an emergency stop. The treadmill will immediately cease operation.
Maintenance
General Cleaning
Wipe down the treadmill surfaces with a damp cloth after each use. Avoid using abrasive cleaners.
Belt Lubrication
Regular lubrication of the running belt is crucial for optimal performance and longevity. Use the provided silicone treadmill lubricant.
- Turn off and unplug the treadmill.
- Loosen the rear roller bolts slightly to lift the belt.
- Apply a small amount of silicone lubricant evenly under the center of the running belt.
- Tighten the rear roller bolts.
- Plug in the treadmill and run it at a low speed (e.g., 1 MPH) for 5 minutes to distribute the lubricant.
Frequency: Lubricate every 3 months or after 50 hours of use, whichever comes first.
Belt Adjustment
If the running belt shifts to one side or slips, it may need adjustment.
- Belt Centering: If the belt drifts to the left, turn the left rear roller bolt clockwise in small increments. If it drifts to the right, turn the right rear roller bolt clockwise. Run the treadmill for a few minutes after each adjustment to check centering.
- Belt Tension: If the belt slips during use, tighten both rear roller bolts equally in small increments (e.g., quarter turns) until slipping stops. Do not overtighten.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Treadmill does not power on | Not plugged in; Power switch off; Safety key not in place; Circuit breaker tripped | Check power cord connection; Ensure power switch is ON; Insert safety key fully; Reset circuit breaker |
| Belt slips during use | Belt too loose; Insufficient lubrication | Adjust belt tension (see Maintenance); Lubricate running belt (see Maintenance) |
| Belt drifts to one side | Belt out of alignment | Adjust belt centering (see Maintenance) |
| Unusual noise | Loose parts; Motor issue; Belt friction | Check all assembly bolts; Contact customer support if noise persists after lubrication |
| Heart rate sensor not working | Hands not firmly gripping sensors; Dry hands | Ensure firm, full hand contact; Moisten hands slightly if dry |
| Display not showing data | Loose connection; Sensor issue | Check cable connections to console; Contact customer support |
Specifications
| Feature | Detail |
|---|---|
| Model | GM2231 |
| Motor Power | 2.5 HP |
| Speed Range | 0.5 - 7.5 MPH |
| Weight Capacity | 300 lbs |
| Running Belt Size | 40.5" x 15" (L x W) |
| Overall Dimensions | 53"D x 25"W x 44"H |
| Folded Thickness | 8.5" |
| Net Weight | 69 lbs |
| Voltage | 110-120V |
| Frequency | 60Hz |
| Display Type | LED |
| Number of Programs | 15 |
| Material | Metal, ABS |
Warranty and Support
Warranty Information
This GYMAX Walking Treadmill comes with a 90-day warranty from the date of purchase. This warranty covers manufacturing defects and workmanship. It does not cover damage caused by misuse, accident, unauthorized modification, or normal wear and tear.
Please retain your proof of purchase for warranty claims.
Customer Support
For any questions, technical assistance, or warranty claims, please contact GYMAX customer support.
Contact information is typically found on the product packaging or the official GYMAX website.
For more information about GYMAX products, visit the official GYMAX store: GYMAX Store on Amazon

