Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

All, I have a 28" DR snow blower that will not move forward or reverse. With thanks to search results I have done the adjustments - tire pressure, skid height, scraper height and all of those things mostly found for the Ariens blowers When I run the blower, the plate is spinning, when I pull the leaver the friction plate engages and runs the axle that runs the pinion gear and it turns the differential gear but the axles don't move. I can push and pull the blower forward and back freely so I know the axles are not frozen. is it possible that the differential is bad? Is there any kind of adjustment? thanks for your help.