Welcome to HTF! I think you're gonna love your Hi-Lo, be patient when figuring stuff out and you'll have fun getting it fixed up. The folks in the Hi-Lo community love helping people, so we'll help you get there.
thermonieum is right, we have a decent collection of manuals in our library, and adding to them by and by. If you can't find the exact ones that you need let us know so we can help you find them, and add them to our library.
Pictures are a big help. So whenever appropriate snap a picture and send with the question. A good example might be that loose white wire by the water pump. Is one end of it connected to the water pump?
2001 Hi-Lo 22TL