Precor UBK13 Service Manual page 32

Figure 19: Primary Pulley
Installing the Primary Pulley
14 Slide the primary pulley onto the crankarm axle assembly, ensure the axle key is in place and aligns
with the slot on the primary pulley. Note: The concaved side of the primary pulley will be facing
the frame.
Figure 20: Crankarm Axle & Key
15 Thread the 32mm retaining nut onto the input axle and fully tighten.
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