Under the seat should be a sticker with the model and serial number could you post those numbers?

Hello. The model number is 455. There is no serial number but there is a service number its 237592 Thank You for your help

The number doesn't seem to exist anymore. At the time these riders were built by Noma. I tried converting it to a Briggs MA, but had no luck. What would be helpful is going through a catalog such as OEP (Oregon) and the blades are detailed on hub size and length.

Do a search for Oregon 96-011 & see if that might work.

Thank You aj_allen I'll do a search on this item.