How to Start Your Generac Generator Manually or Clear a Fault 1. ​Locate and Open the Generator: First, locate the generator on the property. Once at the generator, unlock and lift the top cover of the unit. There are two locks located on each end of the cover. 2. ​Turn OFF and Clear Fault Code: Next, find the Manual/Auto/Off generator control located on the right-hand side of the unit and select OFF to turn the generator off. Then, press ENTER on the keypad to clear the fault code. 3. ​Attempt