Precor 9.31 Manual page 51

accuracy when the replacement drive roller is installed.
7. Remove both drive roller mounting bolts. Remove the drive roller from the treadmill.
8. Remove the running belt and deck from the treadmill. If both sides of the deck have been
used, discard the deck. If the bottom side of the deck has not been used, flip the deck so
that when it is replaced it will now be the top side.
9. Decks with inserts that are being flipped need to be reversed so that the bottom of the deck
can be used, the inserts can be removed by threading the deck screw into the insert from
the top. Using a hammer or mallet the insert can be tapped out the bottom of the deck.
Remove the insert from the deck screw. Using one of the CATN025-150 bolts and a flat
washer, to cover the hole, thread the bolt into the insert and pull the insert into the opposite
side of the deck until the insert is flush with the deck surface. Repeat this procedure with the
remaining five inserts.
10. Using a clean, dry cloth, wipe the top surface of the deck clean of any dirt, dust or debris.
Set the replacement or flipped deck inside of the replacement running belt. Set the running
belt and deck combination in its mounting position on the treadmill.
11. Place two running belt gauges on each side of the running belt, being sure that the gauges
are not across a belt seam. Set the gauges to the 3% mark as shown in the Illustration
below
12. Slide the drive roller into running belt and into the drive belt. Hand start both drive roller
mounting bolts.
13. Tighten the left hand drive roller bolt fully. The left hand side of the drive roller should be as
far forward as possible.
14. Tighten the right hand drive roller bolt until the mark placed on it in step 5 aligns with the
front edge of the drive roller shaft.
15. Steps 12 and 13 should place the drive roller into its original position and should now be
square to the treadmill frame.
3.55%
3.5%
3%
9.31, 9.33, 9.35 Treadmill
Page 51