Full Model number? Drive bet between engine and transmission turning the top pulley and fan on top of transmission? Fan may have broke and was noise, and has broken the belt!
Model number will be example 13W1243b560. Is the top pulley turning on the transmission with engine running and clutch out? Look up under fender to see it. Drive belt is above the deck drive belt.
Model number does not show to be correct. Here sis one I picked. See if this has the same drive. Link below.
No need for a call at this time. Did you look at the link I sent showing the drive belt arrangement? And need to find if the belt is turning the pulley on the transmission. Will mower roll in freewheel position? Or could the brakes be locked?
And your model number is ***** shown under MTD.
Did you look at the blet link I sent? Is this look like yours? Need to verify your model number when you can. Link is below.
Sure, I'm 70 myself, and the pulley has a woodruff key that keeps it from turning on the shaft.
Good, engineers over think everything!