1. Introduction
The Humanscale FM 300 Foot Machine Footrest is designed to provide ergonomic support and comfort during prolonged sitting. By encouraging gentle rocking and offering adjustable height, it aims to alleviate pressure on the lower back and engage lower leg muscles, promoting healthy circulation.
This manual provides essential information for the proper setup, operation, and maintenance of your Humanscale FM 300 Foot Machine Footrest.
2. Safety Information
- Ensure the footrest is placed on a stable, level surface to prevent tipping.
- Do not stand on the footrest. It is designed for foot support only.
- Avoid placing excessive weight on the footrest beyond its intended use.
- Keep fingers and clothing clear of moving parts during adjustment.
- Regularly inspect the footrest for any signs of damage or wear. Discontinue use if damage is observed.
3. Package Contents
Your Humanscale FM 300 Foot Machine Footrest package should contain the following:
- Humanscale FM 300 Foot Machine Footrest (natural wood platform with steel frame)
- User Manual (this document)

Figure 3.1: The Humanscale FM 300 Foot Machine Footrest, featuring a natural wood platform and a black steel frame.
4. Setup and Assembly
The Humanscale FM 300 Foot Machine Footrest comes pre-assembled and requires no additional tools for setup. Follow these steps to prepare your footrest for use:
- Unpack: Carefully remove the footrest from its packaging.
- Position: Place the footrest under your desk or workstation.
- Adjust Height: The footrest features a 3-inch range of height adjustment. To adjust, locate the adjustment knobs on the sides of the steel frame. Loosen the knobs, set the footrest to your desired height, and then securely tighten the knobs to lock the position. Ensure both sides are adjusted evenly for stability.

Figure 4.1: Close-up view of the footrest showing the adjustment knob for custom positioning. The footrest offers a three-inch height adjustment range.
5. Operating Instructions
The FM 300 Foot Machine is designed for intuitive use to enhance your ergonomic comfort.
- Foot Placement: Rest your feet comfortably on the natural wood platform. The non-skid pads help keep your feet in place.
- Gentle Rocking Motion: The footrest is designed with ball bearing rollers that allow for a smooth, gentle rocking motion. This movement engages your lower leg muscles and promotes healthy circulation, reducing static posture during prolonged sitting.
- Relieve Back Tension: By raising your feet to a comfortable height, the footrest helps to relieve tension in your lower back, contributing to improved posture.

Figure 5.1: A person comfortably using the Humanscale FM 300 Foot Machine Footrest under a desk, demonstrating proper ergonomic positioning.

Figure 5.2: A close-up of feet on the footrest, illustrating the gentle rocking motion that engages lower leg muscles and promotes circulation.
6. Maintenance
Proper care will ensure the longevity and continued performance of your footrest.
- Cleaning: Wipe the wood platform with a soft, damp cloth. For the steel frame, use a mild cleaner if necessary, and dry thoroughly. Avoid abrasive cleaners or harsh chemicals that could damage the finish.
- Inspection: Periodically check all components, especially the adjustment knobs and ball bearing rollers, for any signs of loosening or wear.
- Storage: Store the footrest in a dry environment away from extreme temperatures.
7. Troubleshooting
If you encounter any issues with your footrest, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Footrest height collapses or slips. | Adjustment knobs are not sufficiently tightened. | Ensure the adjustment knobs on both sides are tightened firmly after setting the desired height. Apply firm pressure when tightening. |
| Squeaking or rubbing noise during rocking. | Debris in the roller mechanism or slight misalignment. | Inspect the ball bearing rollers for any obstructions. Clean the area around the rollers. If the issue persists, ensure the frame is not overly tightened, which can cause rubbing. |
| Footrest does not rock smoothly. | Rollers are dirty or obstructed. | Clean the ball bearing rollers and the tracks they move on. Ensure no foreign objects are impeding movement. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | FR300-1NEW |
| Brand | Humanscale |
| Material | Wood (platform), Steel (frame) |
| Color | Natural (wood) |
| Item Weight | 9 pounds |
| Product Dimensions | 20.5 x 18 x 6.5 inches (L x W x H) |
| Platform Size | 11.875" x 16" |
| Height Adjustment Range | 3 inches |
9. Warranty and Support
For warranty information or technical support, please contact Humanscale directly through their official website or customer service channels. Keep your purchase receipt as proof of purchase.
You can visit the Humanscale store for more information: Humanscale Store on Amazon





