Make a list on what you need to do and not to do with the fixed motor. Power washers work well, those car wash stations are great if they have strong pressure and don't get water in dizzy cap.
Pennyman is right about themplugs, Avoid them POS things. Stick with old school and for oil, I read that 30wt is great for breakins plus additive of course. Watch your oil pressure and etc etc. You want to stay excited with a running engine. Though you will be hearing strange things in the motor as you spark her up fresh. A little paranoia is a good thing. lol