I am in need of a Yard King Mower manual for a Model # 521613X89A. I believe it is a 52" mower. Serial # 7461305913L051. What I need is the mower belt or belt size. [email protected]

Looks like that was made by Murray.

The deck belt is a 037X93MA
The drive belt is a 037X97MA

Hi,
I can confirm those numbers in part. The deck has two belts 37X92MA and 37X93MA. The motion drive belt is indeed 37X97MA. To get your own copy of the parts manual, click on the link below.
Peace,
Clarke