Under the chrome side cover you'll see a bleeder. Open it until the reservoir is almost empty. Close the bleeder and fill the reservoir with Vlavoline Synpower DOT 4 fluid. Re-open the bleeder and keep filling the reservoir until fluid comes out clear down below. Close the bleeder and make sure fluid level is at the line inside the reservoir. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.