There are some videos on You Tube on how to install an SYE that are pretty good and detailed. It won't show a complete rebuild, but it'll show you a bunch of what needs to be done. The rest of it, you could figure out once you get it cracked open. It's not a complicated assembly. Also, look for some paper instructions on SYE installations. Finally, I think there's also an NP231 manual in PDF form floating around. I don't remember where I saw it. The info is out there - sorry that I didn't save the links.
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