There are several others who are having the same issue. If you remove the motor apply 9 or 10 volts DC for a moment to see if it rotates? Mine did. So, it's not the motor. To check it out remove the (4) screws from the bottom that will remove the bottom cover and allow you to see the side brush assemblely. (2) screws remove the side brush motor. You can check to see if it will spin freely by gently rotating the grush. More than likely it is a sensor issue, dirty or something. Without a schematic I have no Idea how it gets it power to spin. If you stumble on any info please let me know. Rick nealre990@gmail.com

I also took out the motor and it ran fine. I also looked at the gears but they never felt tight or damaged. I guess I'll try and lub them but I don't feel good about that. I noticed that it never tries to run at all. I feel it's a sensor but with out a schematic I don't know what sensor or if its a combo of sensors? I have searched for a schmatic but to no avail. I guess they are tight lipped about their product. If anyone know how to find a schematic Please let me know... Thanks, Rick nealre990@gmail.com