Astro 9477 Manual

Squeeze the handles until the ratchet releases. The tool will automatically open once the full compression is reached.

Before diving into the specifics of the manual, it is essential to understand exactly what the Astro 9477 is. Often referred to as the "OTC 9477," this device is a heavy-duty scan tool designed to interface with the electronic control modules of commercial trucks, buses, and heavy equipment. astro 9477 manual