Precor TRM10/GEN06 Service Manual page 108

Installing the Drive Roller
6 Place the drive belt on the new drive roller and use as a handle to
slide the drive roller through the running belt and into place. Hand
tighten both drive roller mounting bolts.
7 Make sure the running belt is in the center of the deck, the spacing
should be the same on each side of the running belt to the edge of the
running deck.
8 Start tightening the left and right side drive roller mounting bolts.
Move back and forth between the left and right side mounting bolts so
the bolts will tension evenly which will reduce the stress on the
threads of the bolts. The left side drive roller shaft will tighten
flush to the front frame bracket.
9 Using a measuring tape, measure the distance from the front of the
left side drive roller shaft to the front of the frame cross beam and
make note of that measurement.
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