How do you set the timing on a 1985 ATC 250 sx?

To set the timing on a 1985 ATC 250 SX, first, remove the left side cover to access the ignition system. Use a timing light and align the timing mark on the flywheel with the designated mark on the stator at the specified RPM (usually around 1,500 RPM). Adjust the stator by loosening the screws and rotating it until the marks align, then tighten the screws securely. Reassemble the cover and test the engine to ensure proper timing.