Nautilus t516 ユーザーズマニュアル

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5-5  Loosen the motor tension bolt (see Figure 3) using 

a 1/2 inch wrench and then loosen the (4) 1/2 inch 
nuts and bolts (heads located under the motor 
pan) securing the motor base to the pan, allowing 
the motor to slide towards the belt. 

5-6  Slide the drive belt off the pulley on the end of the 

motor shaft. 

5-7  Remove the front and rear roller following the 

instructions for replacement of the front and rear 
roller (Section 1: Replacement of Crowned Front 
Roller and Section 3: Replacement of Crowned 
Rear Roller).

5-8  Place the treadmill on its right side (motor side 

towards the floor). 

5-9  Remove the (4) nuts on the underside of the 

walking board (see Figure 4 and 4A) and loosen 
the other (4) tall isolators nearest the floor. 

5-10  Remove the walking belt by sliding it off the left 

side of the walking board. 

NOTE:  It will be necessary to raise the left side of 

the board slightly from the frame to give 
clearance to slide off the belt (see Figure 5).  

5-11  Install the new belt by sliding it over the front and 

rear rollers from the left side of the treadmill.

5-12  Reattach the walking board to the frame using 

the (4) nuts and isolators removed in Step 9. 
Check the remaining nuts and isolators and 
tighten. 

5-13  Attach the front and rear roller to the frame 

following the instructions for replacement of 
front and rear roller (Section 1: Replacement of 
Crowned Front Roller and Section 3: Replacement 
of Crowned Rear Roller).