ProForm 520 Owner's Manual page 11

b. If an extension cord is needed, use only a 14-gauge general-purpose cord of five feet or less in length.
C°
If the walking belt is overtightened, treadmill performance may
decrease and the walking belt may be permanently damaged.
Remove the safety key and UNPLUG THE POWER CORD.
Using the 3/16" allen wrench, turn both rear roller adjustment
bolts counterclockwise, 1/4 of a turn. When the walking belt is
properly tightened, you should be able to lift each side of the
walking belt 3-4 inches off the walking platform. The center of the
walking belt should just touch the walking platform° Be careful to
keep the walking belt centered. Plug in the power cord, insert the
safety key and run the treadmill for a few minutes. Repeat until
the walking belt is properly tightened.
RearRoller / /
Adjustment Bolts // /_
3"-4
6. SYMPTOM: THE WALKING BELT IS OFF-CENTER OR SLIPS WHEN WALKED ON
a. If the walking belt has shifted to the left, first remove the safety
key and UNPLUG THE POWER CORD. Using the 3/16" allen
wrench, turn the left rear roller adjustment bolt clockwise, and
the right bolt counterclockwise, 1/4 of a turn each. Be careful not
to overtighten the walking belt. Plug in the power cord, insert the
safety key and run the treadmill for a few minutes. Repeat until
the walking belt is centered.
b. If the walking belt has shifted to the right, first remove the safety
key and UNPLUG THE POWER CORD. Using the 3/16" allen
wrench, turn the left rear roller adjustment bolt counterclockwise,
and the right bolt clockwise, 1/4 of a turn each. Be careful not to
overtighten the walking belt. Plug in the power cord, insert the
safety key and run the treadmill for a few minutes. Repeat until
the walking belt is centered.
b
U
C,
If the walking belt slips when walked on, first remove the safety
key and UNPLUG THE POWER CORD. Using the 3/16" allen
wrench, turn both rear roller adjustment bolts clockwise, 1/4 of a
turn. When the walking belt is correctly tightened, you should be
able to lift each side of the walking belt 3-4 inches off the walking
platform. The center of the walking belt should just touch the
walking platform. Be careful to keep the walking belt centered.
Plug in the power cord, insert the safety key and run the treadmill
for a few minutes. Repeat until the walking belt is properly tight-
ened.
C
STORAGE
Unplug the power cord when the treadmill is not in use.
Using the 7/32" allen wrench, remove the bolt from the upper end of
each upright (see drawing 1). Rotate the handrails down.
Remove one bolt and washer from the lower end of each upright (see
drawing 2). Loosen the other bolt in the lower end of each upright.
Carefully lower the uprights.
It is recommended that the treadmill be covered during extended
periods of storage.
Re
11