REF: 8405294



In stores: March 2022.
Designed for walking at home.

A reassuring treadmill for walking!

The W900 walking treadmill is revolutionising treadmill walking with its comfortable features: reassuring ergonomics, innovative cushioning, large walking surface and a console with all the options!

VERSATILITY: Walk at your rhythm, from 1 to 10 km/h and with a motorised incline of up to 10%.
USER COMFORT: Extra comfortable 50 cm x 120 cm walking surface with innovative "Comfort Walk" cushioning.
COACHING: Built-in programmes - console connects to the Domyos and partner apps.
COMPACT DESIGN: Motorised fold-up design and four wheels to move in any direction.

Assembling and setting up

Thank you for purchasing a Domyos product. To help you get your equipment up and running, click on the video to see the different set-up steps.

W900 assembly video


Are you still having issues with your equipment even though it's properly set up? You can find all our FAQs here.

Your treadmill doesn't switch on

1. Check that the power cord is plugged into a working mains socket (to check if the wall socket is working, plug in a lamp or other electrical device).

2. Check that the other end of the power cord is connected to your treadmill.

3. Check that the safety key is pushed fully into the console.

4. Check that the main switch near the power cord is set to I.

5. Check that the I/O switch lights up. If it doesn't, change the fuse: https://youtu.be/Yhw70ctYuq0

WALK500 (From: January 2019)
The treadmill slows down when you step onto it

The treadmill belt is slack:

=> Choose the tab "How to check if your running belt is correctly tensioned" in the SERVICING YOUR PRODUCT section.

Your treadmill is making a noise

1. Shoes:
=> The noise you hear could be the sound of your shoes on the running belt. To check that the noise isn't coming from your shoes, please see the video below

2. The screws are loose:
=> Tighten all of the screws.

3. The running belt is wonky:
=> Select the "Centring the running belt" tab in the SERVICING YOUR PRODUCT section.

4. The running belt is not lubricated:

The motor of the treadmill slows down or stops irregularly while the console stays switched on

Running belt tension is too high:

=> Choose the tab "How to check if your running belt is correctly tensioned" in the SERVICING YOUR PRODUCT section.

Having trouble with your heart rate monitor belt?

PLEASE NOTE: the W900 does not come with a heart rate monitor!

You can buy the Bluetooth heart rate monitor belt (BLE = Bluetooth Low Energy or Smart) with the product reference number 8334795 from our website or your local Decathlon store.

*Once properly set up, your heart rate monitor is automatically detected, and your heart rate, in beats per minute, will appear on the console's display.

*Compatible with other BLE heart rate monitors.

Having a problem with an app (e-connected, zwift, etc.)?

Is your equipment working properly but you're having a problem with the application? Click the "MY APP" button for troubleshooting tips.

What is "bluetooth" used for?

- It lets you connect to the speakers.
You can do this from the settings menu on your phone.

- It lets you connect a BLE heart rate monitor.
(BLE = Bluetooth Low Energy or Smart)

- It lets you connect to apps (Domyos E-connected, Kinomap and Zwift)

What is the "usb" port for?

The "USB" port is only for plugging in and charging your smartphone. It's not an MP3 system.

The words "service" appear on the screen

Every 200 km, the word "service" flashes up on the "GO" home screen.

This message is an important reminder to service your equipment by lubricating the treadmill deck.
*To see how to lubricate the treadmill deck, refer to the FAQ "RUNNING DECK LUBRICATION" in the "SERVICING YOUR PRODUCT" section.

Use the following lubricant only: https://www.decathlon.co.uk/p/treadmill-lubricant-kit/_/R-p-119636?mc=8326425

To clear the message:
When the safety key is plugged in and the service message appears, press the "STOP" and speed "+" buttons for three seconds.

Your console isn't showing the right speed

To access your treadmill’s configuration menus, remove the safety key and hold down the "STOP" and "+" buttons for 3 seconds.
Press one of the programme buttons (TARGET/POWER/CALORIE/HEALTHY) to switch between screens until you get to "UNITS".
Select the unit of distance, KM for Kilometres or Ml for Miles, press "+" or "-" to modify and confirm with the "STOP" button.

How can you see the total distance and time run on the treadmill?

1. Remove the safety key.
2. Press the "+" and "Stop" buttons at the same time for three seconds.
3. To switch between screens 1, 2 and 3, press one of the programme buttons (TARGET/POWER/CALORIE/HEALTHY).

- Screen 1 = total time used.
- Screen 2 = total distance covered.
- Screen 3 = selection of the unit of distance KM (kilometres) or Ml (miles).
*To see how to select the right unit, see the FAQ "YOUR CONSOLE ISN'T SHOWING THE RIGHT SPEED" from the "PROBLEMS" section.

How do you activate/deactivate the console's beep?

When the console displays "GO" with the safety key in place, press the "+" button to activate or deactivate the ON or OFF function.

Parts diagram

WALK500 (From: January 2019)

Servicing your product

It takes care of you, so you should do the same for it. Regular maintenance is necessary to preserve the performance of your equipment and extend its service life.

Maintenance after each use

1. Turn off and unplug your treadmill.

2. Apply a little gentle cleaning product to a pure cotton cloth.
Do not spray cleaning product directly onto your treadmill and do not use ammonia- or acid-based cleaning products.

3. Wipe down the console and screens.

4. Wipe any dust and marks from the handrails, footrests, frame and motor cover.
You should also wipe the platform alongside the belt.

Regular maintenance or "service" message

Regular maintenance is necessary to preserve the performance of your equipment and extend its service life.
This action is recommended when the message "SERVICE" appears on your console.

1. Lubricate the deck after 200 kilometres of use.

2. Unplug the power cord and open the motor cover to gently vacuum the interior.
Please see the section on: "REPAIRING YOUR PRODUCT" to remove the motor cover.

3. Inspect and correctly tighten all the external parts of the treadmill.
You can refer to the assembly video or the product manual.


Storage tips

Do not leave in a damp place or outdoors, nor in direct sunlight.

Place a standard floor mat (Domyos Training Mat) under your treadmill.

Use restrictions

For home use only.

Maximum user weight: 150 kg.

Centring the running belt

You will need the Allen key (BTR) that came with your treadmill:  
1. Switch on your treadmill and set it at a low speed (4 km/h).  
2. Insert the key into the bolt on the side where the running belt is off-centre.  
3. Turn it a quarter turn clockwise (wait 30 seconds between each quarter turn) until the belt is back in the correct position.

How to check if your running belt has the proper tension

The tension on the W900's running belt should be set to 1.30 (+/- 0.06). This is the motor belt tension.

IMPORTANT: This tension measurement is the optimal tension level. However, you don't need to reset the tension if the figure is below 1.30 and if the belt is running smoothly (it doesn't slip or jerk).
An excessively tight belt can cause premature wear of the rollers or motor.

After checking the tension on the console:
- If the figure is too low, you need to tighten the running belt.
(Tightening is done by turning the roller's two rear screws clockwise).

- If the figure is too high, you need to loosen the running belt.
(Loosening is done by turning the roller's two rear screws anti-clockwise).
A half key turn = 0.03

For the setting: select the "Running belt tension" tab in the MAINTENANCE section.

How to check the tension on the console:
1. Stand on the footrests.
2. With the safety key removed, press and hold the "START" and "STOP" buttons for three seconds.
3. The console will display the word "start". Press the "START" button and insert the safety key.
4. The treadmill will start at 5 km/h and display the running belt tension. (Make any adjustments necessary).
5. Press the "STOP" button.

W900 Checking the running belt tension

Running deck lubrication

To extend the lifespan of your treadmill, you should lubricate it every 200 km of use.

Please use Domyos lubricant only (Ref: 8326425). You can order it from your Decathlon store or from our website by clicking the "DOMYOS LUBRICANT" button below.

1 & 2. Simply spray twice underneath the running belt on the right and on the left.
3. Then set your treadmill off at 5 km/h for 5 minutes, without standing on it.

Running deck lubrication

Preventative maintenance

1. Check the motor and the drive belt every 600 hours of use or every 3,600 km*
2. Replace the running belt every 500 hours of use or every 3,000 km*
3. Replace the running deck every 700 hours of use or every 4,200 km*
4. Replace the rollers every 600 hours of use or every 3,600 km*

*To find out the number of hours of use or the total distance run, go to the FAQs and read " HOW TO FIND OUT THE DISTANCE RUN AND HOURS OF USE ON YOUR TREADMILL" in the PROBLEMS section.


Getting your treadmill serviced and repaired by a technician

Discover the options* available for servicing and repairing your treadmill.

*Our rates include labour only (parts not included) and may vary depending on the store.
If the store does not provide services on site, the products are sent to the nearest Regional Workshop, which could lead to an additional charge. Please contact your Decathlon store for a quote.

Order spare parts for this product



  • W500

    Need the product's user guide? Click to download.

WALK500 (From: January 2019)

Our commitments

Domyos guarantees this product under normal conditions of use for five years for the structure and two years for other parts and labour from the date of purchase shown on the receipt.