echo cs-301 mufler mod?

[david newbie]

This is a really clean saw that Ive had for a couple years, I find it very handy, but always felt like it had a little more to give. The piston looks brand new, I think it's a very low hour saw. I cant see how to open up the muffler without soldering or welding tools. Does this have a catalytic converter? I cant see an easy way to open it up with the tools I lack. Any one ever messed with these mufflers? I think the 306, 341 and 346 may have the same muffler? Thanks for you brain

 

[esean]

I'd guess no cat given the saw's age and thickness (or thinness)
of the muffler. Can you see anything looking in the muffler inlet or outlet?

 

[david newbie]

maybe someone previously removed it, as the inlet looks a little odd

 

[Chevboy0167]

I would think no cat in muffler. But... there are 2 different series years. The later one might be possible...

 

[david newbie]

pretty sure I have the later model. but I think someone already got in there and removed the cat

 

[Sidecarflip]

Echo uses a circular CAT element that you can readily see when looking inside the muff, but I doubt it ever had one in the first place as the saw is too old. Open up the outlet a bit and be happy.

What I do if I remove one is either buy a non CAT muffler (Echo offers a non CAT muffler for later model saw)s or I grind off the folded over seam, remove the CAT and open up the outlet and TIG weld it back together.