Inside a Briggs & Stratton Muffler - How It Woks/Repair

Project to repair/restore/upgrade Toro Wheel Horse 8-25 lawn tractor:
Replacement 11hp Briggs and Stratton had a large rattle in the exhaust... Lets see what's inside, whats wrong and how it works.
www.digitalPimp...
www.diyinventor...