Johnson Horizon Fitness 7.0AT-04, Service Manual

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CHAPTER 6: PART REPLACEMENT GUIDE
6.5 FRONT ROLLER REPLACEMENT
1) Remove the motor cover as outlined in Section 6.1.
2) Remove both of the rear roller screws to remove tension from the running belt.(Fig-1)
Fig-1 Fig-2 Fig-3
3) Remove the drive belt from the front roller and remove the roller from the running belt.(Fig-2)
4) Replace new Front roller and motor drive belt, and check belt alignment with alignment Jig (Fig-
3) ,the specification is <1.5mm.
5) Check belt tension with equipment.(Fig-4)
Fig-4
(Belt tension: 275~330Hz)