I need info on this mower please

I need info on this mower please. I really do not know who actually builds it to start with. The Data tag says 917.270810. It's a 19.5 L-head OP Briggs with a 42 inch cut. I've not torn aything down yet , but suspect the rear axles are the type with a round shaft with two flats on the side that fit into the wheel hub withan e-clip. What rear end does this have? Is there an easy way to install a sprocket onto the axle end for a chain drive? BTW, it's a craftsman.

Did you actually try to google that number?

I'm still tying to find ifo on the rear end and who actually builds it, yes.

Sears Parts Direct shows it as a Foote/Dana 4360-122 6 speed, from the parts diagram I found it looks like it has the flats on the axle,
It only took a couple minutes to fing that.

Thanks! How "durable" is this rear end? Can differant gear sets be bought for it?

I have no idea, never ran one.

If its an older model it should be pretty strong.

Is it built by AYP or who, the tractor itself?