2. Center the belt.
NOTE:
While centering the belt choose one bolt to adjust. Do not adjust both bolts.
A.
With the treadmill running at 5 mph (8 kph) observe the running belt. If the belt tracks
off center to the right or left the deck will become exposed. Use a 3/4” socket wrench
to tighten the rear roller bolt on the side of the treadmill toward which the belt is
moving. For example: If the belt moves to the right and the deck becomes exposed
on the left, tighten the bolt on the right side of the frame, tighten about 1/2 of a turn
(clockwise) and wait 30 seconds. If the belt does not move back to the center of the
treadmill, make another adjustment to the
same bolt
. Once the running belt has been
adjusted closer to the center of the treadmill use about 1/4 of a turn until the belt has
been stabilized.
B.
After the belt has been centered, check the belt tension again. Make sure the running belt
tension is tight enough so that the 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 belt is slipping. If the belt does slip, use a wrench to equally
tighten
both
rear roller adjustment bolts 1/2 of a turn (clockwise). Adjust the belt until no
further slipping is felt.
Checking the Belt and Deck Surfaces —
The running belt and deck should be checked
periodically for any excessive wear. In an effort to make sure that the running belt operates
properly, visually inspect the belt often to make sure that there are no tears or fraying in the
belt material. The running belt, deck, deck bushings and motor brushes should be replaced
every 9,000 miles (14,500 km). A service prompt will appear at this interval and the parts will
need to be replaced.
Inspect the edges of the belt as described below.
Tools Required
• None
1. Disconnect the external power source.
A.
Unplug the treadmill from the power outlet.
2. Check the belt and deck condition.
A.
Look at the edges of the belt while you roll it by hand. If the belt has any rips or looks
excessively worn the belt needs to be replaced.
B.
Run your hand under the belt on the top of the deck surface. If you feel excessive
ridges or cracks, or if any wood is exposed under the black surface, the deck should
be replaced. In time, a worn belt and deck can cause high current draw and ultimately,
motor failure.
NOTE:
If the running belt and deck need replacement refer to a qualified service technician.
Cybex 425T Treadmill Owner’s Manual
Preventive
Maintenance
Page 4-4
