Walking Belt Tension; Walking Belt Centering - Nautilus Trimline T523 Owner's Manual

Trimline treadmill user manual
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Just like changing the oil in your car or replacing a filter in your home's heating and cooling system, a little
preventive maintenance will insure your treadmill will operate smoothly and quietly for years to come.

WALKING BELT TENSION

As walking belts tend to stretch slightly with use, the walking belt may occasionally need to be tightened. If
the walking belt is too loose, you may find the belt stops while running or walking, while the motor contin-
ues to run. DO NOT OVERTIGHTEN THE BELT. This will cause reduced motor performance and roller
damage.
When properly tensioned, you should be able to lift the side of the belt about
2-3 inches (5-7.5 centimeters). A quick test for belt tension: you should be
able to fit three fingers under the edge of the belt.
To tighten belt:
Use the hex key provided with the treadmill (or a 3/16 inch hex wrench).
Place the hex key in the hole in left end cap and into the socket of the
adjustment screw. Turn key one full turn clockwise. Then place hex key in
hole in right end cap and turn key one full turn clockwise. Check the ten-
sion of the belt. Continue back and forth until belt is at the correct tension.
Make sure to adjust both sides equally to ensure correct belt alignment.

WALKING BELT CENTERING

The walking belt may occasionally need to be centered.
First be certain that belt is tensioned properly (see above).
Run the treadmill at about 3.5 mph (6 kph)
Place the hex key through the hole in the left end cap and into the socket of the adjustment screw.
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f belt has moved to the right:
Turn the right adjustment screw 1/2 turn clock-
wise, then turn the left adjustment screw 1/2 turn
counterclockwise.
If belt does not move, repeat until belt is centered.
1/2 TURNS
UNTIL BELT IS CENTERED
THEN RECHECK TENSION OF THE BELT
Then recheck tension of the belt (see above).
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A A
R R
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N N
G G
C C
A A
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Y Y
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If the belt has moved to the left:
Turn the right adjustment screw 1/2 turn counter-
clockwise, then turn the left adjustment screw 1/2
turn clockwise.
If belt does not move, repeat until belt is centered.
THEN RECHECK TENSION OF THE BELT
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D D
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L L
1/2 TURNS
UNTIL BELT IS CENTERED
L L
L L

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