Belt is to narrow and riding on the bottom of the V. Get a wider belt so it grips on the sides before bottoming. The V belts are not what they use to be . go to NAPA
Yep.....belts are junk compared to what they used to be. Replaced the belt on our DD 18 months ago....think looks like it is 20 years old already....and it was a NAPA belt.....