avery
Welcome to TF!
I just added some pages on the add-on hydraulic lift kit. Notice on the second set there are some minor changes in part #'s. I'm not sure if these supersede the first setup or if there were actual changes in the parts themselves.
Looking for a guard is a tough one. I have been looking also, and haven't found one. It seems most have been discarded over the years. It does work fine w/o it, just keep your pants away from it.
I tried sonny's and they didn't have one. I also tried ray's and they didn't have any either but gave me a price of around $80 from what I remember.
The spring and seals should be easier to find. You can try Bob Fenn at
www.bolensman.com. Sonny's if they answer the phone will probably have them (260) 726-2808. Ray's Mower will most likely have them also and answers the phone promptly and will tell you whether or not it's in stock. Ray's number is (610) 367-2078. If you find an extra guard anywhere, let me know!