A belt that jerks under your foot and a belt that slowly creeps towards one side can feel like the same fault. They're two different problems, and each one has its own fix.
Treadmill belt slipping usually means the belt is too loose or has more silicone oil than it needs. An off-centre belt is an alignment problem. You can fix both at home with the Allen key that came with your WalkingPad: make small clockwise turns, then do a short test run at 3 to 4 km/h.
For oiling schedules, see how often to lubricate a walking pad. For warning lights and codes, see our guide to folding treadmill problems and error codes.
Key Takeaways
- Slipping comes from tension or too much oil. Off-centre comes from alignment. Check which one you have before you adjust anything.
- Turn the screw on the side the belt has drifted towards, clockwise, one small step at a time, and test after every step.
- Most current WalkingPad models use a quarter turn per step. The C1, C2 and A1 Pro use a half turn.
- If a few small adjustments don't help, stop tightening and send WalkingPad support a short video.
Is Your Belt Slipping or Off-Centre?
Watch what the belt does before you pick up the Allen key. The symptom tells you which fix to use. If you have both problems, centre the belt first and then check the tension.
|
What you notice |
What it usually means |
Start with |
|
The belt hesitates or jerks under your foot while the motor keeps running |
The belt is too loose, or there's too much silicone oil |
Fixing a slipping belt |
|
The belt creeps towards one side, and the gap between the belt and the frame narrows on that side |
The belt is off-centre |
The step-by-step guide |
|
On models such as the R3, Z3, MX10 and X25, the white mark on the belt edge moves outside the gaps in the plastic shell at the front |
The belt is off-centre |
The step-by-step guide |
|
Both of the above |
Two separate problems |
Centre the belt first, then check tension |
|
Grinding or rubbing noise, a burning smell, or an error code |
A fault that adjustment won't fix |
Contacting support |
Quick Checks Before You Reach for the Allen Key
Some drifting has nothing to do with the adjustment screws. A two-minute check of the floor and the belt can save you turns you didn't need.

- Floor: Your walking pad needs a firm, level surface. Older floorboards aren't always flat, so press down on each corner of the frame and make sure it doesn't rock. Deep carpet or a thick, soft mat lets the frame sink unevenly, and a very soft mat can also interfere with the sensors that detect where you're standing. If your pad lives on carpet, read up on using a walking pad on carpet.
- Under and behind the belt: Switch off, unplug, and look along both edges and the rear end for fluff, hair or small objects. A little dust at the back is normal, so just wipe it away.
- Tools: You only need the L-shaped Allen key supplied with your machine.
- Safety: Keep the machine switched off and unplugged while you turn the screws, and never stand on the belt while you adjust it.
How to Re-Centre a Walking Pad Belt, Step by Step
To re-centre a walking pad belt, turn the adjustment screw on the side the belt has drifted towards, clockwise, by one small step. Then test it before you turn again. For good walking pad belt alignment, make one small change at a time.

- Switch off and unplug: Make sure nobody is on the belt.
- Centre the belt by hand if your model allows it: On the R3, R3 Hybrid, Z1, Z3, Z3 Hybrid, MX10 and X25, lift the rear board and slide the belt back to the middle. On the X218, G2 Plus and G5i, raise the deck to about 45°. Centre the belt until the gaps on both sides look equal, then lower the deck without moving the belt. If that solves it, you don't need the Allen key. On the C1, C2 and A1 Pro, go straight to step 3.
- Find the two adjustment holes: They sit at the rear end of the deck, one on each side of the belt. Insert the Allen key into the hole on the side the belt has drifted towards.
- Turn clockwise by one step: On most current models, one step is a quarter turn. On the C1, C2 and A1 Pro, it's a half turn. Turn only that one screw.
- Test the belt: Plug in and run the belt at 3 to 4 km/h for 1 to 2 minutes while you watch from the side. Don't stand on it yet.
- Repeat if needed: If the belt still drifts the same way, make another step on the same side. If it starts drifting the other way, turn the other screw clockwise by one step.
- Walk on it: Once the belt stays centred on its own, walk slowly for a minute and check it stays put with your weight on it.
You don't need to work out left and right from where you're standing. Whichever side the belt has moved towards is the side you turn.
How to Fix Treadmill Belt Slipping Without Over-Tightening
To fix treadmill belt slipping, rule out the oil first, then tighten both sides by the same amount. Equal turns add tension without pulling the belt off-centre.
Check the oil first
WalkingPad belts need only 5 to 10 ml of silicone oil at a time, and more than that can make the belt slip. If the slipping started just after you oiled the belt, wipe away the excess you can reach. Run the belt slowly with nobody on it, then test again before you touch the screws.
If it's been months since the last oiling and the belt feels sticky or jerky, the deck may simply be dry. Our guide on how to lubricate a walking pad covers the routine. If you need suitable oil, the WalkingPad Maintenance Kit includes 100 ml of silicone oil, a protective mat and a cleaning cloth.

Tighten both sides equally
Give both adjustment screws a half turn clockwise, so the two sides stay equal. On the X218, G2 Plus and G5i, adjust one hole at a time: a half turn on one side, then a half turn on the other.
Then walk slowly and plant your foot firmly. If the belt no longer hesitates, stop there. Don't add an extra turn just in case. WalkingPad belts are set to a factory tension, and too much tension can damage the motor and wear the belt.
Adjustment values by WalkingPad model
You don't need a torque wrench. WalkingPad belt adjustment is measured in turns of the Allen key, not newton-metres. A quarter turn is 90° and a half turn is 180°.
|
Model |
Before the Allen key |
Off-centre: one step |
Slipping |
Test run |
|
C1, C2, A1 Pro |
Go straight to the Allen key |
Half turn (180°) clockwise, drifting side only |
Both screws a half turn clockwise |
1 to 2 minutes (C2: at 3 to 4 km/h) |
|
Z1, Z3, Z3 Hybrid, R3, R3 Hybrid, MX10, X25 |
Lift the rear board and centre the belt by hand |
Quarter turn (90°) clockwise, drifting side only |
Both screws a half turn clockwise |
3 to 4 km/h for 1 to 2 minutes |
|
R2 |
Start calibration mode: hold Mode and Speed Up on the remote for 3 seconds or more until the display shows "CALI" (the belt runs at 3 km/h) |
Quarter turn (90°) clockwise, drifting side only |
Both screws a half turn clockwise |
1 to 2 minutes |
|
X21 |
Go straight to the Allen key |
Quarter turn (90°) clockwise, drifting side only |
Both screws a half turn clockwise |
4 km/h for 1 to 2 minutes |
|
X218, G2 Plus, G5i |
Raise the deck to about 45° and centre the belt by hand until both gaps match |
Quarter turn (90°) clockwise, drifting side only |
A half turn on each side, one side at a time |
3 to 4 km/h for 1 to 2 minutes |
On every model, add only 5 to 10 ml of silicone oil at a time. Using a P1, X208 or X25+? Check the manual that came in the box, or ask support before you adjust it.
When to Stop Adjusting and Contact WalkingPad Support
Stop adjusting and get in touch if a few small adjustments haven't helped, or if you notice any of these:
-
Wear: the belt edges are frayed or curling, or the surface looks worn.
-
Noise: a grinding, rubbing or sharp metallic whistling sound.
-
Burning smell or sudden stops: a smell of burning, or the belt stops without warning.
-
Error codes: a code on the display. You can look it up in WalkingPad error codes.
A short video often helps the team find the cause faster. Send your order number, the model name from the nameplate, a 10 to 20 second clip filmed from behind the running belt, and which screws you turned and by how much.
You can reach the team through the WalkingPad UK Support Centre or by emailing uk.support@walkingpad.com, and they aim to reply within 24 hours. You can also call +44 808 502 0297, Monday to Friday, 8am to 5pm UK time. If the paper manual has gone missing, you can find your model's manual online.
Small, careful turns fix many slipping and drifting belts. If yours keeps coming back, let support take a look before you tighten any further.
Frequently Asked Questions
Why does my treadmill belt slip after I oil it?
Usually because there's too much oil. WalkingPad belts need only 5 to 10 ml of silicone oil per application, and extra oil can make the belt slip. Wipe away what you can reach, run the belt slowly with nobody on it, and test again before you adjust the screws.
How tight should a walking pad belt be?
Tight enough that it doesn't hesitate when you plant your foot, and no tighter. WalkingPad sets the belt to a factory tension, so adjust in half turns and stop as soon as the slipping stops. Over-tightening can strain the motor and wear the belt.
Can I keep walking if the belt is slightly off-centre?
It's better to stop and centre it once the belt moves past the mark or gets close to the frame. If you keep walking while it drifts, the edge can rub against the frame and wear the belt. Re-centring needs only the supplied Allen key, and each test run takes 1 to 2 minutes.

