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3.4 AUTO CALIBRATION INSTRUCTIONS
Run Auto Calibration to calibrate incline after assembly and after 
replacing any electronic component. 
AUTO CALIBRATION PROCEDURE:
1)   Press and hold the INCLINE DOWN and SPEED DOWN keys for 
three seconds until Manager appears on the middle LED display. 
2)   Press the SPEED or INCLINE UP key until Engineering appears on 
the display.
3)   Press ENTER once Engineering is displayed.  
4)  Scroll between programs in the Engineering Mode using any UP or 
DOWN key until Auto Calibration appears on the middle LED display.  
5)  Press ENTER once Auto Calibration is displayed., you should not 
be standing on the running belt.  
6)  After completion, the display will either return to normal operation (if 
the unit passed the Auto Calibration) or display that the Auto Calibration 
failed.  
3.5 ADJUSTING THE RUNNING BELT
After placing the treadmill in the position it will be used, the belt 
must be checked for proper tension and centering.  The belt may 
need to be adjusted after the first 2 hours of use.  Temperature, 
humidity, and use cause the belt to stretch at different rates.  If 
the belt starts to slip when a user is on it, be sure to follow the 
directions below.
STEP 1:  Locate the two hex head bolts on the rear of the treadmill.  
The bolts are located at each end of the frame at the back of the 
treadmill.  These bolts adjust the rear roller.  Do not adjust until the 
treadmill is on.  This will prevent over tightening of one side.  
STEP 2: The belt should have equal distance on either side 
between the frame.  If the belt is touching one side, do not start 
the treadmill.  Turn the bolts counter clockwise approximately one 
full turn on each side.  Manually center the belt by pushing the belt 
from side to side.  Tighten the bolts the same amount as when the 
user loosened them, approximately one full turn.  Inspect the belt 
for damage.
STEP 3:  While the treadmill is running at 3 mph, observe the belt 
position.  If it is moving to the right, tighten the right bolt by turning 
it clockwise 1/4 turn, and loosen the left bolt 1/4 turn.  If it is moving 
to the left, tighten the left bolt by turning it clockwise 1/4 turn and 
loosen the right 1/4 turn.  Repeat Step 3 until the belt remains 
centered for several minutes.  
STEP 4:  Check the tension of the belt.  The belt should be very 
snug.  When a person walks or runs on the belt, it should not 
hesitate or slip.  If this occurs, tighten the belt by turning both bolts 
clockwise 1/4 turn.  Repeat if necessary.  
CHAPTER 3: PREVENTATIVE MAINTENANCE