Nautilus E618 Service Manual page 28

Note: Your machine may not match the image. For reference only.
15. 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.
Or:
• Hold the edges of the Drive Belt at the midpoint (M) and twist it. The
Drive Belt should turn only 90 degrees (1/4 turn, to vertical).
If the tension is correct, go to Step 19.
If the tension is too loose or too tight, adjust the nuts and bolt on the
Tensioner Assembly (Idler Assembly).
16. To adjust the Tensioner Nuts on the Tensioner Bracket, use a 10mm
open end wrench to hold the Tensioner Bolt steady and turn the nuts with
a second 10mm open end wrench.
17. When the tension is correct, tighten the nuts against the Tensioner
Bracket to hold the bolt and the Tensioner Assembly in position.
Note: This step may require two people.
18. Carefully turn the Right Crank Arm and check the movement of the
Drive Belt. The Crank Arms and Flywheel should move as one.
Be sure to keep fingers clear of all pinch hazards when you
!
turn the Right Crank Arm.
Adjust the belt tension again if necessary.
Tensioner Bracket
Tensioner Nuts
Tensioner Bolt
Tensioner Assembly
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M
M