Precor UBK13 Service Manual page 39

Vertical upright & recumbent bicycles
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Removing the Primary Drive Belt
2
Slightly loosen the three idler pulley bracket mounting bolts.
3
Loosen the adjustment bolt lock nut.
4
Turn the adjustment bolt counter clockwise as required to remove the tension from the primary
drive belt.
Figure 30: Drive Belt Adjustment
5
Remove the primary drive belt.
Removing the Idler Pulley
6
Remove the retaining ring that secures the idler pulley to the axle.
7
Remove the idler pulley.
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