Nautilus T618 Service Manual page 80

12. Loop the new Drive Belt around the Motor Pulley. Start the Drive Belt on the Drive Pulley and roll it
in a clockwise motion. Be sure the Belt does not come off of the Motor Pulley.
Keep fingers out of any pinch opportunities when turning the Pulleys.
13. Roll the Drive Pulley clockwise until the Drive Belt is fully installed. Continue to roll the Belt forward
while adding side pressure with fingers to align as necessary.
14. With the Motor Assembly loosely attached to the Frame, turn the Belt Tensioner Screw to the previ-
ous level. This will tighten the Drive Belt to the previous tension level.
15. Using a 6mm hex wrench, fully tighten the screws that attach the Motor Mount to the Frame.
16. Inspect the Speed Sensor to see if it has been moved during the procedure. If necessary, adjust it to be the observed distance from the Drive
Pulley.
17. Re-install all remaining parts that were removed in reverse order.
18. Attach the power cord and turn on the Treadmill by flipping the power switch to ON.
19. From the Power Up (or Welcome) screen, push and hold down the PAUSE/STOP button and Right arrow button for about 5 seconds to go into
the Console Setup Mode. The Console display will show the Date prompt with the current setting.
20. Push the OK button 4 times until the Console displays the TOTAL RUN HOURS screen.
21. Push and hold down the PAUSE/STOP button and Right arrow button for about 5 seconds to go into the Engineering Mode. The Console display
will show the current Firmware Version.
22. Push the Down arrow button 4 times until the Console displays "RUN MCB CAL".
Be sure the area around the Treadmill is clear of all bystanders, children and pets. Be sure there is nothing on or under the Walking
Belt, or near the Treadmill.
23. With the area clear, push the OK button. The calibration procedure will begin by automatically moving the Walking Belt and lifting the Deck
through the full range of incline motion.
Be sure not to touch or allow anyone else to touch the machine while calibration is occurring.
24. When calibration is complete, the Console will display "done" for a few seconds, and then return to the "RUN MCB CAL" option.
25. Flip the power switch to OFF. Calibration is now complete for the machine.
26. Final Inspection
Inspect your machine to ensure that all hardware is tight and components are properly assembled.
Do not use until the machine has been fully assembled and inspected for correct performance in accordance with the Owner's
Manual.
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Drive Pulley
Motor Pulley