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

I have a MTD 13AH660F372 AND I PUT NEW BELT ON DECK BUT THE BLADES GO AROUND EVEN WHEN THE DECK IS UP THE WHOLE WAY. I CHECKED THE BRAKES THEY ARE TUCHING THE PULLEYS. I CHECK WHERE I BOUGHT THE BELT AND THEY SWEARE IT THE THE RIGHT BELT. IT SEEMS THE SPRING AT THE REAR OF THE DECK WHERE IT HOOKS TO THE REAR IS REALLY TIGHT, BUT THERE IS NO ADJ, ANYWHERE.

Did you check the manual to make sure the belt they sold you isn't a little too short.  Even one inch will make a big difference.

no manual, and dealer says its the right belt.

I'd compare it to the old belt, if you have it, just to make sure. Wouldn't be the first time a dealer was wrong.