If you are using Version 57 or newer, you do not need this guide.
Google recently released a new version of Google Chrome which included its own version of a PDF Reader. Unfortunately like most releases there are a few bugs that Google did not anticipate. One such bug is that legal sized documents will print to letter sized paper and chop off the bottom 3 inches of the document. The PDF document attached to this article gives step by step instructions on disabling the Google PDF Reader and re-enabling the Adobe Reader PDF reader.