Stops working after doing a few rooms. Replaced HEPA and motor filters. No longer works at all. Swapped out switch with another Eureka and it's not the problem. Not sure how to get at the motor. Any reccomendations/instructions? Old vac but gets very little use and is in good condition otherwise.

Vacuums - Eureka - Smartvac 4870 Bagged Upright Vacuum