Product review (5 stars): The belt is definitely very tight, by design. ...
The belt is definitely very tight, by design. It barely fits around the large pulley only, let alone the drive gear also. But I tried what other reviews suggested. I heated the belt in the oven (not a microwave) at 200 degrees to help it stretch easier and used 2 zip ties to keep it in place on the large pulley and it went on with no problem within 5 minutes.