The "SimCity 4" manual is not a huge document, but does contain some useful information for installing the game and troubleshooting. Maxis has put the "SimCity 4 Deluxe" manual online. An excerpt from the strategy guide can be downloaded along with the manual. The download sizes for the manual and strategy are good sized at 1 Mb and 2.3 Mb. You need to register at the "SimCity 4" website to download the manual.
Download Manual at the official "SimCity 4" website.