CYBEX 525T Service Manual page 145

6. Tighten the rear roller bolt on the side of the treadmill toward which the running belt is moving using
a 3/4" socket wrench.
For example: If the running belt moves to the right of the belt tracking slots, tighten the bolt on the
right side of the frame, tighten about 1/2 of a turn (clockwise) and wait 30 seconds. If the running
belt does not move back to the center of the belt tracking slots, make another adjustment to the
same bolt. Once the running belt has been adjusted closer to the center of the belt tracking slots,
use about 1/4 of a turn until the running belt has been stabilized.
7. Check the belt tension after the running belt has been centered.
Make sure the running belt tension is tight enough so that the running belt does not slip or hesitate
when stepped on. Walk on the treadmill at 3.5 - 4 mph (5.6 - 6.4 kph) and every 4th to 5th step throw
your weight into your step to feel if the running belt is slipping. If slipping is felt, confirm it is the
running belt slipping and not the drive belt. With the hood cover removed, observe movement at the
drive belt and front roller.
Do not over tighten the running belt. Over tightening the running belt can cause the belt to stretch
and require replacement. Continue procedure until running belt stops slipping.
8. Check running belt for centering position.
If running belt is not centered, perform steps 5 and 6.
Complete installation
1. Plug the power cord into the power outlet.
2. Verify the power cord is not being pinched under the front of the treadmill.
3. Operate the unit at all levels to verify proper operation.
Drive Belt
Tools Required:
• Phillips screwdriver
• Flat head screwdriver
• 1/2" Socket wrench
• 9/16" Socket wrench
• 3/4" Socket wrench
Disconnect power source
1. Toggle the on/off (I/O) power switch to the off (O) position. The on/off (I/O) power switch is located
under the front end of the unit, or on the front right side panel.
Cybex 525T Treadmill Part Number
Page 145 of 199
Item Description
1 Rear roller bolt
Qty.
2