I downloaded the manual for the Microlite 4000 here (and had it printed and bound at Office Max for future reference).
http://www.rvwithtito.com/download/O...anceManual.pdf
I believe you are referring to a manual on the actual removal from your specific coach though? About a year ago, I read an article somewhere re how to remove the genny from mine (I suspected a weak magneto ...... still do) and I recall that it was all pretty intuitive and standard fare...... e.g., remove power and cover the 12v cable end, remove the controller, remove the muffler, remove and plug the fuel line, etc. I have read where one of those 500lb hydraulic table carts from Harbor Freight really works slick to lower the genny and scoot it out from under ............if you end up having to do that. The Microlite 4000 weighs about 175 lb, IIRC.
Sorry I couldn't be more help. Hopefully, someone with your model coach will chime in.
Good luck with the repair................. ed s