Pro-Form 790t Treadmill Manual page 27

SYMPTOM: The walking belt is off-center or slips
when walked on
a. If the walking belt is off-center,  rst remove the
key and UNPLUG THE POWER CORD. If the
walking belt has shifted to the left, use the hex
key to turn the left idler roller screw clockwise 1/2
of a turn; if the walking belt has shifted to the
right, turn the left idler roller screw counterclock-
wise 1/2 of a turn. Be careful not to overtighten the
walking belt. Then, plug in the power cord, insert
the key, and run the treadmill for a few minutes.
Repeat until the walking belt is centered.
a
b. If the walking belt slips when walked on,  rst
remove the key and UNPLUG THE POWER
CORD. Using the hex key, turn both idler roller
screws clockwise, 1/4 of a turn. When the walk-
ing belt is correctly tightened, you should be able
to lift each edge of the walking belt 2 to 3 in. (5 to
7 cm) off the walking platform. Be careful to keep
the walking belt centered. Then, plug in the power
cord, insert the key, and carefully walk on the
treadmill for a few minutes. Repeat until the walk-
ing belt is properly tightened.
b
SYMPTOM: The console display has lines running
through it
a. If lines appear in the console display, see
THE INFORMATION MODE on page 22 and adjust
the contrast level of the display.
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