Nautilus R614 Service Manual page 18

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NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the "Replace the Shrouds" procedure.
Disconnect all power to the machine before you service it.
!
Note: Your machine may not match the image. For reference only.
1.
Remove the Top Shroud, Left Shroud and Right Shroud from the
Main Unit. Refer to the "Replace the Shrouds" procedure.
2.
To test the Drive Belt tension:
Push the Drive Belt downward at the midpoint (M) between the
pulleys and measure the distance. The Drive Belt should have
only 0.25" (0.64 cm) of give. See Figure 1.
Or:
Hold the edges of the Drive Belt at the midpoint (M) and twist it
(see Figure 2). It should turn only 90 degrees
(1/4 turn, to vertical).
If the tension is correct, go to Step 6.
If the tension is too loose or too tight, adjust the position of the
Flywheel. Continue to Step 3.
3.
To loosen the Flywheel hardware (A), use a 15 mm open end
wrench to hold the nut on one side steady and loosen the nut on the
opposite side with a 15 mm socket and wrench.
4.
Move the Flywheel in the Main Frame bracket as necessary to
adjust the tension. Hold it in position and tighten the hardware.
Note: This step may require two people.
To tighten the Flywheel hardware, use a 15 mm open end
wrench to hold the nut on one side steady and tighten the nut on
the opposite side with a 15 mm socket and wrench.
5.
Carefully turn the crank arms and check the movement of the drive
belt. The Crank Arms and Flywheel should move as one.
!
turn the Drive Pulley.
Adjust the belt tension again if necessary.
6.
Reassembly is the reverse procedure.
Figure 1
Figure 2
18
M
M
A

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