You can find Olympus user manuals in both the American and Japanese versions of the Olympus website. The American website, located at OlympusAmerica.com, lists manuals for models sold in the United States, while the Japanese version, which can be found at Olympus.co.jp, provides manuals for most overseas models.
For the American website, start by entering "manuals" in the search bar located at the top right of every page. Click the result that says "Download Instruction Manuals." In the Manuals page, choose the product category from the drop-down menu. Choose the product model from the next drop-down box, then click on the manual that you wish to view.
To access the Japanese version of the website, go to the Manuals page of the Japanese version and click the appropriate link. Click on the category to which your product belongs, then click on the manual that you wish to view.