Briggs And Stratton Charging System Diode, I've replaced it with a heavier one, but I'm just wondering if it's just a diode, or if it's a 12v Zener diode for regulation. Many of the bigger versions in the lawn/garden tractors have regulators. 1 provides a means of identifying the various alternator systems. Get the best deals for Briggs and Stratton Charging Diode at eBay. It has a limited output to it and is basically controlled by engine speed. Diagram has been tested on several models of Briggs and Stratton engines but should work on any brand engine. Briggs and Stratton 31P777-0299-E1 18HP Charging problem? I have a Craftsman LT1000 with a Briggs and Stratton 31P777-0299-E1 engine. Model 287707-0227-01. The Briggs has the lower output charging 84012663 Alternator. current to D. sdwc, 1ovavyu, yrmet1, b6g, joqwj, gn, fhtrm, nyg, ocr, gnjj,