I ordered a new motor first thinking this was the issue - then had to order the auger motor coupling. To remove the coupling I used diamond plated cutting wheel with my dremmel tool. I cut two sides of the old coupling to remove. Was hoping the threads on the original motor were not damaged to re-use. The threads were rounded and I didn't trust them so I replaced the motor as well. Hooked everything back up and worked great. Took about an hour in total with cutting off the old coupler and then re-assembly with new parts.