That model used a platform common to many models made by JD in the 70s and 80s.... They were very easy to work on, not a lot to the steering, most likely if you look there will be multiple places that you can re-bore and make as new using common bushings.
Fun little rider .. I have a couple of retired Electric 90 models that have the same steering system..
If you were closer you could have the front end parts, I would not be surprised that you will be able to find all the pieces you might need on Ebay... Lots of that type rider around. :smile:KennyV
PS welcome to the Lawn Mower Forum, I see this is your first post... If you do rebuild the front end, take pictures and post as you go....:thumbsup: