ProForm Performance 400 C User Manual page 25

SYMPTOM: The walking belt is off-center or slips
when walked on
a. If the walking belt is off-center, first 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, first
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 tread-
mill for a few minutes. Repeat until the walking belt
is properly tightened.
b
25