Need belt specs for Bigten 42" mower deck

[tej]

I have a Allis Chalmers Bigten that our family
purchased in 1966. It came with a 42" mower deck
and I need to find the correct belt specs for
the PTO to Mower Pully connection. This is
the pully that runs length wise with a twist and
powers the mower deck.
Thanks

[Al]

Steve, The correct belt you need is a #174911 44.1" long. That is a Simplicity belt,I don't know what the AC # would be as I don't have the AC belt guide reference. Hope this helps! DLC

[tej]

Steve, Your Simplicity or AGCO Allis dealer can look up the belts you need for that mower. Tim