WALKINGBELTS D391U
WALKINGBELTS Technogym Run 600 XT Pro Treadmill Walking Belt Instruction Manual
Model Number: D391U
Introduction
This manual provides essential information for the installation, maintenance, and care of your new WALKINGBELTS 2-ply Premium Treadmill Walking Belt, specifically designed for the Technogym Run 600 XT Pro (Model D391U). Proper installation and regular maintenance are crucial for the longevity and optimal performance of your treadmill belt.

Image: The WALKINGBELTS 2-ply Premium Treadmill Walking Belt, shown rolled up, highlighting its durable construction and product labeling.
Setup and Installation
Replacing a treadmill walking belt requires careful attention. Always refer to your Technogym Run 600 XT Pro treadmill's original service manual for specific disassembly and reassembly instructions. The following steps provide general guidance for belt replacement.
- Safety First: Before beginning any work, ensure the treadmill is unplugged from the power outlet.
- Access the Deck: Remove any covers or shrouds necessary to access the treadmill deck and rollers. This typically involves unscrewing fasteners around the motor cover and side rails.
- Loosen Rollers: Loosen the rear roller bolts to release tension on the old belt. You may also need to loosen front roller bolts depending on your treadmill model.
- Remove Old Belt: Carefully slide the old belt off the deck and rollers.
- Clean Deck: Thoroughly clean the treadmill deck and rollers to remove any dust, debris, or old lubricant residue.
- Install New Belt: Slide the new WALKINGBELTS treadmill belt onto the deck, ensuring it is centered and properly aligned with the rollers.
- Tension the Belt: Gradually tighten the rear roller bolts, applying even tension to both sides of the belt. The belt should be snug but not overly tight. A good starting point is to tighten until you can lift the belt approximately 2-3 inches in the center.
- Lubrication: Your new WALKINGBELTS belt comes pre-lubricated. However, it is good practice to apply additional silicone lubricant to the deck before initial use, especially if the deck was cleaned. (Refer to the Maintenance section for lubrication details).
- Reassemble: Replace all covers and shrouds, securing them with their original fasteners.
- Test and Adjust: Plug in the treadmill and run it at a slow speed (e.g., 1-2 mph) without anyone on it. Observe the belt for proper tracking. If the belt drifts to one side, make small, incremental adjustments to the rear roller bolts (turn the bolt on the side the belt is drifting towards clockwise to move it away, or counter-clockwise to move it towards). Allow the belt to run for a few minutes after each adjustment.

Image: A close-up view of the treadmill belt's surface, showing the durable texture designed for optimal grip and longevity.
Operating Considerations
Once the new belt is installed and properly tensioned, the treadmill is ready for use. For optimal performance and safety, always follow the operating instructions provided in your Technogym Run 600 XT Pro user manual.
- Initial Run-in: After installation, run the treadmill for 5-10 minutes at a moderate speed (e.g., 3-5 mph) without a user to allow the belt to settle and ensure proper tracking.
- Belt Tracking: Periodically check the belt's tracking during use. If it consistently drifts to one side, refer to the "Test and Adjust" step in the Setup section.
- User Weight: Adhere to the maximum user weight specified in your treadmill's manual to prevent excessive strain on the belt and motor.
Maintenance
Regular maintenance is key to extending the life of your treadmill belt and ensuring smooth operation.
Lubrication
Your WALKINGBELTS treadmill belt is pre-lubricated with 100% silicone. However, periodic re-lubrication is necessary. The frequency depends on usage, but a general guideline is every 3-6 months or after 100-150 hours of use.
- Type of Lubricant: Always use 100% silicone treadmill lubricant. Do not use petroleum-based lubricants or sprays, as these can damage the belt and deck. A 1oz bottle of lubricant is included with your purchase.
- Application:
- Unplug the treadmill.
- Loosen the rear roller bolts slightly to create a gap between the belt and the deck.
- Apply a thin line of silicone lubricant in a Z-pattern under the belt, approximately 1 foot from the front of the deck. Repeat on the other side.
- Tighten the rear roller bolts to their original tension.
- Plug in the treadmill and walk on it at a slow speed (2-3 mph) for 5 minutes to distribute the lubricant evenly.

Image: A bottle of 100% silicone treadmill belt lubricant, essential for maintaining the belt and deck.
Cleaning
- Belt Surface: Wipe the top surface of the belt with a damp cloth to remove dust and sweat. Do not use harsh chemicals.
- Under the Belt: Periodically clean under the belt to remove accumulated dust and debris, which can interfere with lubrication and cause friction.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Belt slipping or hesitating | Insufficient belt tension or lack of lubrication. | Adjust belt tension (tighten rear roller bolts evenly). Apply silicone lubricant if needed. |
| Belt tracking to one side | Uneven belt tension or misaligned rollers. | Adjust rear roller bolts incrementally. If belt drifts right, turn right bolt clockwise or left bolt counter-clockwise. If belt drifts left, turn left bolt clockwise or right bolt counter-clockwise. |
| Excessive noise from belt | Lack of lubrication, debris under belt, or worn components. | Lubricate the belt. Clean under the belt. If noise persists, inspect other treadmill components or consult a technician. |
| Belt feels sticky or rough | Insufficient lubrication or incorrect lubricant type. | Apply 100% silicone lubricant. Ensure no petroleum-based products were used. |
Specifications
- Product Type: Treadmill Walking Belt / Running Belt / Treadbelt
- Compatibility: Technogym Run 600 XT Pro - Model Number#: D391U
- Ply: 2-ply Premium
- Material: Nylon, Polyester
- Lubrication: Pre-lubricated with 100% Silicone
- Fabrication: Fabricated in USA
- Included: Free 1oz Lube
Warranty
This WALKINGBELTS product comes with a Limited Lifetime Warranty. For specific terms and conditions, please contact WALKINGBELTS customer support.
Support
For any questions, custom size belt inquiries, or support regarding your WALKINGBELTS product, please contact us:
- Toll Free Phone: 1-800-334-5944
- Manufacturer: WALKINGBELTS LLC
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