Hello, Welcome to Just Answer. Thank you for your question. First I would remove the belt cover that is between the engine and auger chute. Inspect the belt, but it sounds like something is jammed and the grinding may be the belt slipping. Are you smelling any burning. Also you may have a problem with the auger bearing. That bearing is supporting the shaft from the auger assy when it goes thru the auger housing to the pulley the auger belt goes to. Another thing you can do is tip the unit up on the nose of the machine and remove the lower cover to inspect that bearing and pulley. Inspect and let me know .
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It appears to be working now...the belts seem really losse and starting to show wear...is it easy to replace them