Treadmill Abnormal Noise Troubleshooting Guide

Self-diagnose the noise, fix it — or know when to call support


1 Consumer Self-Diagnosis Guide

Hi, don't panic if your treadmill starts making strange noises. This guide walks you through a simple “Listen, Look, Feel” check — so you can fix it yourself or know when to call support.

Quick Tip: Most noise issues can be resolved with simple adjustments. If the noise persists after following this guide, our after-sales team is always here to help. When contacting support, please have your order number and product model ready (found on the nameplate on the machine), and try to record a short video of the noise — this will help us diagnose the problem much faster.

1.1 Noise Quick Reference Table

Use the sound characteristics you hear to quickly find the corresponding noise type and troubleshooting direction:

Code Sound Characteristics Noise Type Severity Self-Resolvable?
N01 Continuous “swish-swish” friction sound Belt Misalignment Noise Low Yes — adjust screws
N02 Intermittent shoe-sole friction sound Footstep Friction Noise Low Yes — adjust posture
N03 Periodic “thump-thump-thump” sound Belt Splice Joint Noise Low Normal — fades over time
N04 “Creak-creak” sound Deck / Frame Looseness Low Yes — tighten screws
N05 Even “swish” or slight “click” sound Break-in Noise (New Machine) Medium Yes — apply silicone oil

1.2 Three-Step Listening Diagnosis

Listen carefully to the noise, and use these three steps to quickly narrow down the noise source area:

STEP 1

Listen: Front or Rear?

Stand to the side of the machine and carefully identify where the noise is coming from.

Front noise → Likely motor issues, carbon brush/bearing, front roller damage, or motor cover resonance
Rear noise → Likely rear roller bearing damage or loose belt slipping
STEP 2

Listen: Middle or Bottom?

Further narrow down the location — is it the running deck area or the base frame?

Deck middle → Likely belt lubrication shortage or loose deck screws
Bottom source → Likely main frame screw looseness causing resonance
STEP 3

Listen: No-load or Under Load?

Start the machine without standing on it (no-load test), then compare with normal use (loaded).

Gone with no load → Indicates a load-related issue (deck/belt/bearing)
Still present with no load → Likely motor or drive system issue

1.3 Visual Inspection & Tactile Testing

Use “Look and Feel” methods to further confirm the fault type:

Visual Inspection

  1. Check belt centering: Start the machine at low speed and observe whether the belt tracks to one side. If it drifts noticeably with a friction sound, this confirms a belt misalignment issue.
  2. Check belt surface condition: Carefully inspect the belt surface for severe wear, fraying, cracking, or foreign objects caught in it — any of these could be the noise source.

Tactile Testing

  1. No-load test: Start the machine without standing on it. If the noise disappears, it's a load-related issue; if it persists, it's likely a motor or drive system problem.
  2. Press test: With the machine stopped, press down firmly on both sides of the running deck. If you feel looseness or hear a “creak,” the deck screws may be loose.
  3. Manual belt rotation: Push the belt forward by hand and feel whether it rotates smoothly, without sticking or wobbling. If it doesn't, the bearing may be damaged.

1.4 Step-by-Step Troubleshooting Guide

Based on your preliminary diagnosis, follow the corresponding guide below:

N01

Belt Misalignment Noise

Self-Resolvable Continuous “swish-swish” friction sound

The running belt drifts to one side during operation, causing the edge to rub continuously against the guard. This is one of the most common noise types and can be fixed by adjusting the tension screws.

  1. Tool needed: Allen wrench (hex key) (included with the machine).
  2. Locate the tension adjustment screws on the left and right sides at the rear of the treadmill.
  3. Follow the rule: “Tighten the side the belt drifts toward, or loosen the opposite side.”
  4. Adjust by half a turn at a time, then run at low speed to check if the belt re-centers.
  5. Repeat fine-tuning until the belt runs centered and the noise disappears.
  6. If the belt still won't center after multiple adjustments, contact after-sales for assistance.
N02

Footstep Friction Noise

Self-Resolvable Intermittent shoe-sole friction sound

A friction sound occurs while running because the belt moves fast and your feet can't keep up — the back of your shoe sole scrapes against the moving belt. This is not a machine fault but a usage habit issue.

  1. While running, position your footsteps slightly more forward.
  2. Control your stride length to avoid overstepping, which causes the back of your shoe to catch the moving belt.
  3. We recommend wearing flat-soled running shoes to reduce the contact area between the sole and belt.
  4. Lower the belt speed slightly to give your feet more reaction time.
N03

Belt Splice Joint Noise

Normal Phenomenon Periodic “thump-thump-thump” sound

Treadmill belts have a splice joint — current manufacturing processes cannot produce a completely seamless joint. As the joint passes over the roller, it produces a noticeable “thump” sound, which is more pronounced when the machine is new.

  1. Confirm the sound is a periodic “thumping” that matches the belt's rotation rhythm.
  2. This is a normal physical phenomenon and does not require repair.
  3. Over time, the belt tension will gradually stretch, and the joint noise will naturally diminish or disappear.
  4. If the noise shows no signs of decreasing after more than one month of use, contact after-sales to check the belt condition.
N04

Deck / Frame Looseness Noise

Self-Resolvable “Creak-creak” sound

Loose deck fastening screws cause friction between the deck and the main frame under load. The sound normally appears when stepping on the belt and can often be resolved by tightening the accessible screws.

  1. Tools needed: screwdriver or wrench.
  2. Disconnect the power and make sure the machine is completely stopped.
  3. Locate the fastening screws around the deck, frame, handrails, and motor cover.
  4. Tighten each accessible screw one by one, ensuring none are loose.
  5. Reconnect the power and run the machine at low speed to confirm whether the noise is gone.
  6. If the noise persists after tightening, contact after-sales for further inspection.
N05

Break-in Noise (New Machine)

Self-Improvable Even “swish” sound or slight “click” sound

For a new machine, the motor, bearings, belt, and deck need time to break in during initial use, producing friction sounds or a slight “click.” This is a normal physical phenomenon that can be improved with lubrication.

  1. Confirm the machine is recently purchased and has been used for a short time (within one month).
  2. Apply an even layer of silicone oil under the belt (refer to the “Lubrication Maintenance” section in the user manual).
  3. Run at low speed for 5–10 minutes to distribute the silicone oil evenly.
  4. Break-in noise typically fades after 1–2 weeks of use.
  5. If the noise doesn't decrease after two weeks, or becomes harsh or abnormal, contact after-sales for further inspection.
▶ Troubleshooting Videos

1.5 Multi-Channel Troubleshooting & After-Sales Contact

To help you get assistance quickly, we offer multiple after-sales channels — choose whichever is most convenient for you:

📱

App-Exclusive After-Sales Support

Open the app, then go to Profile > Settings > Feedback

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Social Media

After-Sales Forum QR Code
After-Sales Forum
Facebook QR Code
FACEBOOK
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Other Channels

  • Official Website FAQs
  • Website Live Chat
  • Support Hotline
    +1(713) 589-0078
    +1(281) 777-8190
  • Email Support support@fit365.community
  • WhatsApp +1(713) 589-0078

📋 When contacting after-sales, please have the following ready:

We're always here to help.

No matter what noise issue you encounter, our customer service team will respond as quickly as possible to help you pinpoint and resolve the problem. Thank you for choosing our product!