I do believe i sent Ty home with a spare diff for one of those.
I think there is just a gear that slips on over the shaft and it has a flat metal tab that goes in the slot.
Something like that.
Dont get too impatient.
Keep an eye out for antoher one to help with the restore. You need the cable and handle and im tipping you will need to buy a whole mower to get them. You might be able to get a new replacement cable but i doubt you would get the handle.
Bob.
