Cybex 750T Treadmill Owner’s Manual
Preventive
Maintenance
Page 4-4
2. Center the belt.
NOTE: While centering the belt choose one bolt to adjust. Do not adjust both bolts.
With the treadmill running at 5 mph (8 kph) observe the running belt. If the belt tracks off center to
A.
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.
After the belt has been centered, check the belt tension again. Make sure the running belt tension
B.
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 should be
replaced and the running deck fl ipped every 15,000 miles (24,140 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.
Turn the main power switch on the front of the unit to the off (O) position.
A.
Unplug the treadmill from the power outlet.
B.
2. Check the belt and deck condition.
Look at the edges of the belt while you roll it by hand. If the belt has any rips or looks excessively
A.
worn the belt needs to be replaced.
Run your hand under the belt on the top of the deck surface. If you feel excessive ridges or
B.
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 qualifi ed service technician.
