3
Life Fitness Model 4000 Treadmill
TROUBLESHOOTING GUIDE
Symptom: NOISY TREADMILL
Malfunction Probable Cause Corrective Action
Rubbing sound from
beneath machine
Foreign objects may be stuck
under the machine
Inspect underneath Belt and Machine. Remove
any debris or accumulation.
Rubbing sound from
Striding Belt
Striding Belt not tracking
properly
Striding Belt is rubbing on
extrusion or roller pulley
Striding Belt is rubbing on belt
guide
Adjust Striding Belt tracking. See “How
To...Adjust and Tension the Striding Belt”
Center Striding Belt. See “How To...Adjust and
Tension the Striding Belt”
Center Striding Belt. See “How To...Adjust and
Tension the Striding Belt”
Popping sound
Insufficient break-in period
Wax accumulation on rear
roller
A new Deck and Striding Belt will require a
break-in period of approx. 20 hours.
Run machine at 4 to 5 MPH to distribute wax
onto Striding Belt.
Squeaking noise
Lifesprings may be out of
alignment
Reposition the Lifesprings.
Drive Motor Belt may be worn
or damaged
Replace Drive Motor Belt.
Drive Motor Pulley shifted Check Drive Motor Pulley to insure Pulley is
aligned with Front Roller Pulley. Tighten the
Set Screws to secure the Pulley into place.
“Groaning” sound heard
from front of machine
Drive Motor Belt over-
tensioned
Slacken Drive Belt tension (See “How
To...Remove and Replace the Drive Motor
Belt”)
Weak Drive Motor/Drive Motor
Software
Check Drive Motor Flywheel and Software for
compatibility (See Diagnostic Software
Version.
Faulty Drive Motor Replace Drive Motor
Loud “Groaning” sound
heard from front of
machine while elevating
Faulty Lift Actuator Perform “Lift Test”. (See Diagnostics).
Replace faulty Lift Actuator.
For Assistance:
Call Life Fitness Customer Support Services
1-847-451-0036 or 1-800-351-3737
