Nautilus E618 Service Manual page 34

12. Measure or mark on a piece of scrap paper the length from the end
of the Tensioner Bolt to the outer Tensioner Nut. This will assist with re-
assembly.
13. Using a 10mm wrench, loosen and remove the outer Tensioner Nut so
the Tension Bolt can be released from the Tensioner Bracket.
14. Using a 6mm hex wrench and a 13mm wrench, remove the Tensioner
Assembly Hardware (A) that attaches the Tensioner Assembly to the
Frame Upright.
Note: U se the hex wrench to hold the bolt (A) in place on the outside
and turn the nut from the inside.
15. Remove the Tensioner Assembly from the Frame Assembly and the
Drive Belt.
16. Install the new Tensioner Assembly routing the Drive Belt correctly.
Secure the hardware.
Note: Be sure to adjust the replacement Tensioner Bolt and Tension-
er Nuts to the previous length.
Note: Your machine may not match the image. For reference only.
17. 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).
Tensioner Bracket
Tensioner Nuts
Tensioner Bolt
Tensioner Assembly
34
A
M
M