Nautilus Schwinn 800IC Service Manual page 40

13. Mark the position of the Flywheel Axle Nut on the Flywheel Bracket.
Also record the number of threads showing on the Tensioner Eyebolt on
each side of the Tensioner Support Bracket.
14. To loosen the Flywheel hardware, use a 15mm crescent wrench to
hold the Flywheel Axle Nut on one side steady and loosen the Flywheel
Axle Nut on the opposite side with a 15mm socket and wrench. Remove
the Flywheel Axle Nuts from the Flywheel Axle. Set the hardware safely
aside for reassembly.
15. Using a 10mm wrench, loosen and remove the outer Flywheel
Retainer Nut from the Tensioner Eyebolt. Remove the Tensioner Eyebolt
and inner Retaining Nut from the Flywheel Axle and Tensioner Support
Bracket. Set the Tensioner hardware aside for reassembly.
NOTICE: It may be necessary to move the Flywheel. This step
may require two people.
16. Carefully move the Flywheel Assembly to the opening in the
Flywheel Brackets.
NOTICE: This step may require two people.
17. Carefully remove the right end of the Flywheel Axle from the
Flywheel Bracket.
NOTICE: Make sure to avoid damage to the Speed Sensor on the
left end of the Flywheel Axle.
Flywheel Bracket
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Tensioner Eyebolt
Tensioner
Support
Bracket
Flywheel Axle Nut
Tensioner Eyebolt
Outer
Flywheel
Retainer
Flywheel Axle
Nut