Nautilus Schwinn IC3 Service Manual page 60

Note: Your machine may not match the image. For reference only.
1.
left Crank Arm (A).
2. Using a 16mm socket and wrench, remove the Flange Nut (C) under
the threaded Cap (B).
3. Thread the 25mm Crank Puller into the Crank Arm (A). When the
Crank Puller is in the correct position, only 1-2 threads on the outer
portion (CP2) of the Crank Puller should show.
Note:
with the inner surface (CP2) as shown, before use.
4. Using a 15mm wrench, turn the inner portion (CP3) of the Crank
Puller clockwise. The Crank Arm (A) will slide off as it is tightened.
C
CP1
60
A
CP2 CP3