often to prevent premature wear of the deck, running belt, and the drive motor system. See
the Service Schedule in this chapter to determine the minimum recommended cleaning.
The running belt may become loose and slip on the drive roller with each foot plant. If it does,
follow the Tensioning and Centering the Belt in this chapter. See the Service Schedule in this
chapter for a minimum schedule for checking the belt tension.
Tension and Center the Belt — If the belt is slipping under each step perform this
procedure:
Tools Required
• 3/4” Socket wrench
1. Tension the belt.
A. Use a 3/4” socket wrench to turn each bolt 1/2 turn clockwise. See Figure 1. NOTE:
Be sure to adjust each bolt equally on each side.
B. Turn the power on and press the Quick Start key.
C. Press the Speed
+ to bring the speed up to 3.5-4 mph (5.6-6.4 kph). Allow the
treadmill to run for a minute.
D. Observe the belt to be sure it stays centered. If it is not centered follow step 2.
E. Walk on the belt to see if it still slips. If it does restart this procedure at step 1 A. If you
have to do this procedure three times and it still slips check the drive belt tension in the
Service chapter or call Cybex Customer Service. Follow the next step to be sure the
belt is centered.
! CAUTION: Be careful not to over tighten the belt. Over tightening the belt can cause
the belt to stretch and require replacement.
2. Center the belt.
NOTE: While centering the belt choose one bolt to adjust. Do not adjust both bolts.
Cybex Pro+ Treadmill Owner’s & Service Manual
Preventive
Maintenance
Page 4-3
Figure 1
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