Click here for the service manual
password is pdftown.com
Direct link to download page
Through the www.fiatspider.com forums I have also found this great manual, put together by a Fiat Spider enthusiast, Bradely Artigue. There is some GREAT information in these free documents. Learn more about the author at his website.
I simply printed out the documents I needed from these links and dropped them into a three ring binder for easy access. I recommend printing them double sided. Many printers offer this function now a days and they provide detailed instructions.