bjburkhalter Report post Posted January 14, 2013 Newbie here that is having problems with generator dying after a few minutes. It is a Generac 65 and dies after a few minutes. The diagnostics code is 4 flashes, which says over-speed. What could possibly causing this and what recommendations to fix this problem. Thanks Brent Share this post Link to post Share on other sites
dickandlois Report post Posted January 14, 2013 Brent, this information should cover your Generator. Its a service manual for Generac. http://www.bdub.net/...rac_IM-NP-Q.pdf There is a 6500 and a 6500 E. Think you may have an E version as you mentioned a flash code. The older units where set at 3720 RPM with no load this sets the AC frequency to 62 cycles, then under load it operates at 60 cycles / 3600 RPM. To set you will need a meter that can read frequency, many of the newer volt / ohm meters incorporate a frequency setting. Rich. Share this post Link to post Share on other sites