Johnson Horizon Fitness 7.0AT-04, Service Manual

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CHAPTER 6: PART REPLACEMENT GUIDE
6.6 RUNNING BELT REPLACEMENT
1) Remove the motor cover as outlined in Section 6.1.
2) Remove the rear roller as outlined in Section 6.2.
3) Remove the running deck as outlined in Section 6.4.
4) Remove the front roller as outlined in Section 6.5.
5) Remove the running belt.
Fig-1 Fig-2
6) Reverse Steps 1-5 to install a running belt. (Fig-1 & Fig-2)
Note1:
1.Adjust running belt tension aft r replacement (Note2)
2.The running deck is silicon on one side . New deck surfaces must ALWAYS be matched to a new running belt.
Note2:
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 and 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 direction below.
Step1: Locate the two hex head bolt on the rear of the treadmill. The bolts are located at each end of the frame at
the back of treadmill. These bolts adjust the rear roller. Do not adjust until the treadmill is on. This will prevent over
tightening of one side.
Step2: The belt should have equal distance on either side between the frames. 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.
Step3: 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 turns, and loosen the left bolt 1/4 turn. If it is moving to the left, tighten 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.
Step4: Check the tension of the belt. The belt should be very snug. When a person walks or run 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.