While you wait for answers, we may have found some information which could help you.
Click here for Upright Belt ModelEureka Boss Smart Vac Thermal Cutoff ?
Eureka Model 4870 Motor Replacement?
Vaccum, Eureka Model 6998 A?
how doi i repair eureka boss 4870 vacuum cleaner?
How to fix idler clamp assembly (hardwood/carpet switch) on Eureka SmartVac?
need diragram for a Eureka The Boss Pro?