TimeTraveler Report post Posted August 14, 2020 Our 2005 Revolution 7500 quiet diesel generator is bit noisy. Only way I see to quieten it is to replace the exhaust and muffler. The options on the Onan site are limited and just plain steel, best I can tell. We've had the Mh this long better get stainless If I can find it. 15 years old, and nothing might be avaolable at all in 5 more years. Any sources? Share this post Link to post Share on other sites
dons2346 Report post Posted August 15, 2020 A muffler shop would be a place to start. There is nothing special about a muffler supplied by Onan other than a higher price. Take the measurements of the muffler and go shopping Share this post Link to post Share on other sites
dickandlois Report post Posted August 15, 2020 22 hours ago, TimeTraveler said: Our 2005 Revolution 7500 quiet diesel generator is bit noisy. Only way I see to quieten it is to replace the exhaust and muffler. The options on the Onan site are limited and just plain steel, best I can tell. We've had the Mh this long better get stainless If I can find it. 15 years old, and nothing might be avaolable at all in 5 more years. Any sources? Walker makes a muffler and spark catcher replacement. Stainless Steel tubing is available from custom tube supplier or 2, but on the high price end. Rich. Share this post Link to post Share on other sites
urbanhermit Report post Posted August 22, 2020 !! Never thought about a spark arrestor. Wouldn't be a bad idea for gasoline generators, for sure. All off-road motorcycles are fitted with them. Don't know if a diesel is a spark risk. No? Share this post Link to post Share on other sites
jleamont Report post Posted August 22, 2020 (edited) 4 hours ago, UrbanHermit said: Don't know if a diesel is a spark risk. They are and they are up fitted with them. Although I have never seen a stock diesel toss sparks from its exhaust, I guess it’s possible or theY exercised on the side of caution. they are supposed to be cleaned as routine maintenance Edited August 22, 2020 by jleamont Share this post Link to post Share on other sites
