ProForm 831.297390 - Manual (Page 13)

PROBLEM: The walking belt is off-center when walked on
SOLUTION: a. If the walking belt has shifted to the left, first remove
the key and UNPLUG THE POWER CORD. Using
the 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 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 key and UNPLUG THE POWER CORD. Using
the 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 key
and run the treadmill for a few minutes. Repeat until
the walking belt is centered.
PROBLEM: The walking belt slips when walked on
SOLUTION: a. 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 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 to 4 inches off the walking
platform. Be careful to keep the walking belt centered.
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.
PROBLEM: One of the upper body arms squeaks during use
SOLUTION: a. Correcting this problem requires a small amount of white marine grease, available at most
hardware stores.
Turn the Resistance Knob (61) counterclockwise until
it can be removed. Remove the Resistance Cone (98)
and the Upper Body Arm (94), along with the 3/8”
Washers (99), Spring Washer (101), Thrust Washers
(100), and Thrust Bearing (91). (Note: If the
Resistance Sleeve [97] comes out of the Resistance
Bracket [96], press it back in.) Apply a
thin layer of
white marine grease to the outer surface of the
Resistance Cone (98). Reattach all parts in the order
shown at the right.
b
a
a
98
97
96
94
61
101
100
99
91
99
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