64 Assembling and Maintaining TRM 800-Series Treadmills
Adjusting the Running Belt
If you are unsure about adjusting the running belt, call Precor
Customer Support (refer to Obtaining Service).
CAUTION: Take special care when aligning the running belt. Turn
OFF the treadmill while adjusting or working near the rear roller.
Do NOT wear loose clothing or allow your hair to hang loose
during this procedure. Do NOT adjust the running belt when
someone is standing on it. Be very careful to keep your fingers and
any other object clear of the belt and rollers, especially in front of
the roller and behind the deck. The treadmill will not stop
immediately if an object becomes caught in the belt or rollers.
Important: Make all belt adjustments on the adjusting bolts at
the rear corners of the treadmill, using the hex key provided, and
do not turn either bolt more than ¼ turn before checking the
alignment of the running belt again. Overtightening the adjusting
bolts can damage the treadmill.
To adjust the running belt:
1. Locate the adjusting bolts in the end caps at the rear
corners of the treadmill, as shown in the following
diagram.
Figure 35: Location of the adjustment bolt
2. Use the hex key to tighten the adjusting bolt toward
which the belt is shifting. Turn the bolt ¹₄ turn clockwise.
3. Recheck the belt position as described under Checking the
Alignment of the Running Belt.
If the belt ... Then ...
Continues to shift in the
original direction
Turn the same adjusting bolt an
additional ¹₄ turn clockwise.
Starts to shift in the
opposite direction
Turn the same adjusting bolt ¹₈
turn or less counterclockwise.
Note: If the belt slips after you have adjusted it, tighten both
adjusting bolts evenly, ¹₄ turn at a time, until the slipping
stops. Do not overtighten the belt.
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