Nautilus t518 Benutzerhandbuch

11

Nautilus® Sport Series Treadmill Service Manual

1-6  Loosen the (4) nuts on the Motor base using a 1⁄2 inch 

wrench from the underside of the motor pan.  Using a 
7/16 inch wrench loosen the nut of the “Motor tension 
bolt” located on the front of the motor (Figure 5). Do 
not unscrew it all the way, loosen the motor to get 
enough slack in the drive belt to slide the belt off the 
motor shaft pulley.

 

Note:   Removal of the bracket upright support (Figure 

6) may help in the completion of Step 5, but is 
not required. 

1-7  Remove the drive belt from the roller pulley and slide 

the roller out.

1-8  Replace the roller and re-assemble in reverse order 

from Step 1-4 to Step 1-7.

1-9  Replace the motor cover first, then replace the lower 

outer plastics using (4) Phillips head screws per side, 
and the lower inside upright plastics using (4) Phillips 
head screws, per side.

1-10  Check for proper belt tension following the Walking 

Belt Tension Adjustment and Tracking Adjustment in 
the Appendix 3.