How do you test the coil on a 1990 Yamaha fzr 600?

To test the coil on a 1990 Yamaha FZR 600, first, ensure the motorcycle is off and disconnect the coil's electrical connectors. Use a multimeter to check the primary resistance by measuring across the terminals; it should typically read between 2 to 3 ohms. Next, check the secondary resistance by measuring between the high-tension output and the ground; this should usually range from 7,000 to 15,000 ohms. If the readings are outside these ranges, the coil may need to be replaced.