Anyone have any ideas how to quiet my riding mower with a 10 hp Tecumseh engine,It looks like a cheap muffler for what I know about mufflers,I replaced it with the same model muffler,no change in the noise,which told me my old muffler was ok,does anyone have any ideas how I can quiet it.10hp murray riding mower with a Tecumseh engine.12yr old mower,runs great otherwise.
You are fighting a loosing battle. A lot of the noise comes from the intake and a lot just from the engine block. I've seen people go to great trouble to mount auto mufflers to various equipment and it does not make much difference. If it absolutely must be quieter, look for a replacement Honda or Kawasaki engine. They are far quieter engines.
Did you install it right? Did you get all the old gasket off and put on a new one? Did you tighten the bolts/nuts properly?
Do you know exactly from where the sound is coming? Set it at idle and listen and FEEL around for the exhaust leak
-- feel around before the engine warms up or feel for the puff of exhaust gases.
If the noise is that loud and not coming from the exhaust system, don't worry it. The engine will destroy itself within minutes anyway.
Artemis wrote:
I don't know if this would work with your application, but I've seen generators with metal 3/4" or 1" waterpipe (this assumes the exaust hole in the block is threaded) exaust; a nipple then a T with 2 mufflers screwed into it. Quieted them down quite a bit.
Good suggestion. But at $35 each (probably more today), I don't want to just experiment. I didn't realize that the block has NPT in it making it possible to use ordinary pipes from the hardware store. So maybe someone on this group knows how to make a real muffler. Or maybe there is a book around on design. This could be a fun project.
Shop around a little, or consider used, little guy mower shops often resemble mower grave yards, lots of good reusable parts, it shouldn't be rocket science to see if a muffler has lots of life left in it or not.
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