1. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org OEM Testing and Qualification Catalytic Mufflers

2. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org Catalytic Muffler Engine and Equipment Manufacturers –Determine catalyst requirements –Determine secondary air requirements –Determine muffler performance requirements Design and build prototype mufflers for evaluation with a muffler supplier Heat verification and shielding development –Full load Heat testing –Heat soak during shut down –Off cycle temperature verification Customer misuse of the choke Misfire Lack of maintenance ( air filter)

3. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org Catalytic Muffler After pop evaluation ( on shut down) Muffler material durability evaluation ( stainless?) Installation durability Fire safety review –debris –refueling fire test ( hexane test) Engine manufacturer emissions durability approval

4. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org Muffler Heat Issues Consumer Front Drive Mower

5. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org OEM Specific Engine Shrouds May not function on Tier 3 engines New Tooling would probably be specific to California only engine models This is incremental investment by or for the OEM beyond the cost of emission compliance

6. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org Muffler Application Consumer Rider 19 Hp Kawasaki Twin

7. The Outdoor Power Equipment Institute 341 South Patrick Street Alexandria, VA 22314 703-549-7600 703-549-7604 FAX www.opei.org Muffler With SWRI “E” Catalyst 19 Hp Kawasaki Twin