Nautilus R614 Service Manual page 28

Note: Your machine may not match the image. For reference only.
1. Loosen and remove the old Pedals. Set them safely aside for
reassembly.
Note: The Left Pedal is reverse-threaded. Orientation is based
from a seated position on the bike. The Left Pedal has an "L",
the Right Pedal an "R".
2.
Crank Arm (B) to expose the Hex Head Bolt (C).
3. Using a wrench and socket, remove the Hex Head Bolt (C).
(R)
B
28
(L)
B
C