Order Correct Belt Find your treadmill's model number (usually on a sticker near the motor or under the console). Order the exact replacement belt from the manufacturer or authorized dealer. STEP 2:

When Belt Replacement Is Necessary

Treadmill belts typically last 3-7 years depending on usage, but show these warning signs when replacement is

needed:

Replace Your Belt If:

Visible fraying or torn edges

Cracking on the underside (flip belt and check)

Stretching (won't maintain tension even when tightened)

Uneven wear creating lumps or waves

Surface delamination (top layer separating)

Persistent slipping even after tightening

Age exceeds 5 years with heavy use

Belt Types by Brand

Different brands use different belt specifications:

Life Fitness: 2-ply, often pre-lubricated, 3-4mm thick Technogym: Commercial-grade, 2-ply or 4-ply, pre

treated Matrix: Varies by model, typically 2-ply NordicTrack: Standard 2-ply, 2-3mm thick ProForm: 2-ply,

budget-friendly material Sole: Heavier duty, 2.5-3mm thick

Critical: Always order the exact belt for your model number. Belts are not universal.

DIY Belt Replacement Process

Difficulty Level: Intermediate Time Required: 60-90 minutes Helper Required: Yes (makes it much easier)

Tools Needed:

Allen wrench set

Socket wrench set

Screwdriver set

Vacuum cleaner

Cleaning supplies New belt (model-specific)

Treadmill lubricant

Step-by-Step Instructions:

STEP 1: Order Correct Belt Find your treadmill's model number (usually on a sticker near the motor or under

the console). Order the exact replacement belt from the manufacturer or authorized dealer.

STEP 2: Prepare the Area Unplug the treadmill completely. Remove the motor cover and any side panels for

better access.

STEP 3: Completely Loosen Rear Roller Remove the rear roller adjustment bolts completely (not just

loosening). Push the rear roller as far forward as possible to create maximum slack.

STEP 4: Remove Old Belt Slide the old belt off the rear roller first, then walk it off the front roller. Remove it

from the deck entirely.

STEP 5: Clean Everything This is your opportunity for deep cleaning:

Vacuum the deck surface thoroughly

Wipe the deck with a damp cloth

Clean the roller surfaces

Remove dust from the motor area

Let everything dry completely

STEP 6: Inspect the Deck Look for:

Wear patterns or grooves

Rough patches

Damage requiring repair

If damaged, consider flipping the deck (most are double-sided)

STEP 7: Install New Belt Center the new belt on the deck. Loop it around the front roller first (this is easier

than starting at the rear). Stretch it back and loop around the rear roller.

STEP 8: Tension the Belt Replace the rear roller bolts. Tighten evenly, a few turns at a time on each side. Aim

for 2-3 inches of lift at the center.

STEP 9: Align the Belt Follow the alignment procedure in Problem 4. Run the treadmill empty at 3-4 mph and

make small adjustments until perfectly centered.

STEP 10: Lubricate Apply treadmill lubricant as described in Problem 8. New belts need lubrication despite

being new.