CDI 961-0002 Practical Outboard Troubleshooting Guide BookletTroubleshooting Guide that covers Chrysler/Force, Johnson/Evinrude, Mariner, Mercury, Mercury/Force, Tohatsu/Nissan, and Yamaha 2-Stroke with some 4-stroke. Includes DVA Explained, recommended Shop tools, testing with minimal equipment, voltage drop measurement, troubleshooting battery charging issues and many more!Replaces: 961-0002;