I’m so worried about the belts, thanksI have a 575 with 5287 hours on it. Original motor, blower, pump, chemical pump. Believe it or not, original belts on blower and pump. I changed out the fan belt on the motor. cleaned the heat exchanger once. Meticulous on other regular maintenance oil changes ect. Mine has the dihatsu dm950. This has been the most user friendly, trouble free, reliable piece of equipment I have ever delt with. Turned up on high, heat will stay pegged at 240 all day and all the vacuum you could want.