ProForm 400 X Treadmill User Manual page 17

PROBLEM: The walking belt slows when walked on
SOLUTION: a. Use only a single-outlet surge suppressor that meets all of the specifications described on page 8.
b. If the walking belt is overtightened, treadmill perfor-
mance may decrease and the walking belt may be-
come damaged. Remove the key and UNPLUG
THE POWER CORD. Using the allen wrench, turn
both rear roller bolts counterclockwise, 1/4 of a turn.
When the walking belt is properly tightened, you
should be able to lift each edge of the walking belt 2
to 3 inches off the walking platform. Be careful to
keep the walking belt centered. Then, plug in the
power cord, insert the key, and run the treadmill for
a few minutes. Repeat until the walking belt is prop-
erly tightened.
c. If the walking belt still slows when walked on, please see the front cover of this manual.
PROBLEM: The walking belt is off-center or slips when walked on
SOLUTION: 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 allen wrench to
turn the left rear roller bolt clockwise 1/2 of a turn; if
the walking belt has shifted to the right, turn the
bolt counterclockwise 1/2 of a turn. Be careful not to
overtighten the walking belt. Plug in the power cord,
insert the key, and run the treadmill for a few minutes.
Repeat until the walking belt is centered.
b. If the walking belt slips when walked on, first remove
the key and UNPLUG THE POWER CORD. Using
the allen wrench, turn both rear roller bolts clockwise,
1/4 of a turn. When the walking belt is correctly tight-
ened, you should be able to lift each edge of the
walking belt 2 to 3 inches 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
walking belt is properly tightened.
b
a
b
17
2"–3"
Rear Roller
Bolts