Preventive Maintenance
Ch. 7
TRACKMASTER
54
TMX428 Owner’s Manual
317-160-284 Rev 6
February 2021
Drive Belt Tension Adjustment
This procedure requires the following tool:
1
/
8
” Allen
Wrench
¾” Socket
or Box Wrench
¾” Wrench
Tape measure
NOTE: Because this adjustment is not covered under your warranty, it is important
that you review these instructions thoroughly before proceeding.
NOTE: The drive belt may stretch and loosen with regular use. This looseness may
result in a flapping noise under the hood.
1.
Remove the (5) #10-32 screws located on the bottom hood with
1
/
8
” Allen wrench.
2.
With the ¾” socket and wrench loosen the TENSION ADJUSTMENT back nut.
3.
Press down on drive belt between motor and front roller with approximately 5lbs of
force to achie
ve ¼” to 3/8”.
4.
If adjustment is need using a ¾” wrench turn the TENSION BOLT clockwise to
tighten. To loosen, turn the wrench counter clockwise.
5.
Make small adjustment until the drive belt deflects approximately ¼” to 3/8”
; tighten
the TENSION ADJUSTMENT back nut.
NOTE: Failure to lock the TENSION ADJUSTMENT back nut will allow the drive belt
tension to become loose.
6.
When the treadmill is properly adjusted, reinstall the hood with (5) #8-32 screws.
Item Description
1
1/4 to 3/8 Deflection
2
5 LBS
3
Tension adjustment back nut.
NOTE: When drive belt is over tensioned, the belt tension will cause motor noise. This
could result in premature motor life.
1
2
3
Summary of Contents for TRACK MASTER TMX428
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Page 8: ...Contents TRACKMASTER 6 TMX428 Owner s Manual 317 160 284 Rev 6 February 2021...
Page 30: ...Power Requirements Ch 4 TRACKMASTER 28 TMX428 Owner s Manual 317 160 284 Rev 6 February 2021...
Page 78: ...76 TMX428 Owner s Manual 317 160 284 Rev 6 February 2021...
Page 82: ...80 TMX428 Owner s Manual 317 160 284 Rev 6 February 2021...
