Horizon Fitness Ti21 Owner's Manual page 28

TENSIONING THE BELT
If you can feel a slipping sensation when running on the treadmill, the running belt
must be tightened. In most cases, the belt has stretched from use, causing the belt
to slip. This is a normal and common adjustment. To eliminate this slipping, tension
both the rear roller bolts with the
appropriate size allen wrench, turning
it 1/4 TURN to the right as shown. Try
the treadmill again to check for
slipping. Repeat if necessary, but
NEVER TURN the roller bolts more
than 1/4 turn at a time. The belt
tension is set properly when the
running belt is 1/4 of an inch from
the deck.
CENTERING THE BELT
IF THE BELT IS TOO FAR TO THE LEFT SIDE:
• Turn the left roller bolt / turn clockwise (tighten).
1
4
IF THE BELT IS TOO FAR TO THE RIGHT SIDE:
• Turn the right roller bolt / turn clockwise (tighten).
1
4
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