i gutted my cat
- Thread starter echomeister
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It needs to be removed completely. If it breaks apart while the engine is running your gonna be buying a new piston and cylinder. That would be the best case scenario.
echomeister
ArboristSite Operative
damn.... I guess I will be buying a new muffler.
Just run it without a muffler.
Your neighbors will appreciate it.
Your neighbors will appreciate it.
Honestly I thought he gutted his cat and was going to skin it. I looked in on this thread cause I wanted to know which way he was going to skin it cause I’ve always heard there was more than one way. 
Dig into the remaining part of the cat with a screw driver or small pry bar and tear it into pieces or grab it with needle nose pliers and pull it apart then blow the remaining bits out of the muffler.
This will only take a few minutes.
This will only take a few minutes.
echomeister
ArboristSite Operative
I will try tear it up the rest of the way. I wouldn't have bothered but running other saws really showed me how stopped up that one is.
how this cylinder look
how this cylinder look
You have to pull the muffler apart. I used a torch to heat the seams and pried 3 sides open. Then you cut out the entire catalyst
Not an easy muff to mod...
Separate the 2 halves by heating 3 of the seams with a torch and pry them open.
Cut out the entire catalyst case with a cut-off and plasma torch.
Tack weld that now loose plate.
Open up the exhaust side to match the cylinder. Open up the screen plate. Reassemble making sure to line up the bolt holes.
Don't leave it like that...metal will find its way into the cyl and...boom...
echomeister
ArboristSite Operative
I aint that skilled. I do appreciate the info though.
Welding? I can stick rebar together but if I tried weld that muffler all i would get is a puddle of metal.
Thanks all
Welding? I can stick rebar together but if I tried weld that muffler all i would get is a puddle of metal.
Thanks all
davidprivett
ArboristSite Member
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if you got actylene and oxygen torch braze it. that will be more forgiving than trying to stick weld it.
You might be able to buy a non cat muffler, I did for my CS211T from an aftermarket supplier. Don't see how the remnants of the cat could get sucked into the motor but it would plug the spark arrestor for sure (if you didn't remove that. The one I got is a 'Forrester' replacement part from 'Sawitagain'.... 24 bucks.
Better yet, MIG weld it with a shielding gas outfit. The issue with both is, the muff metal has to be very clean.
echomeister
ArboristSite Operative
Somebody said the muffler for a cs-440 will fit and is non cat.
But i can't part with 50 bucks without a second on that
But i can't part with 50 bucks without a second on that
I could probably go into business doing cat deletes (until the EPA caught me that is).
Like I said, pretty simple. Take an angle grinder with an abrasive wheel and separate the halves and then remove the entire cat with a cutoff wheel in a Dremel. Clean the halves to shiny metal and clamp together and MIG weld them back together using shielding gas and wire.. Paint as necessary and put it back on. You may have to adjust the mixture screws but then again, maybe not.
With the adoption of the coming T5 mandates, even your lawnmower will have a cat. Isn't that exciting?
Like I said, pretty simple. Take an angle grinder with an abrasive wheel and separate the halves and then remove the entire cat with a cutoff wheel in a Dremel. Clean the halves to shiny metal and clamp together and MIG weld them back together using shielding gas and wire.. Paint as necessary and put it back on. You may have to adjust the mixture screws but then again, maybe not.
With the adoption of the coming T5 mandates, even your lawnmower will have a cat. Isn't that exciting?
echomeister
ArboristSite Operative
I took more cat out. But it's a long way from a clean bore where the cat was.
My question is whether this still poses a risk. I want the saw to last. Should i just get a new muffler?
My question is whether this still poses a risk. I want the saw to last. Should i just get a new muffler?
Honestly I thought he gutted his cat and was going to skin it. I looked in on this thread cause I wanted to know which way he was going to skin it cause I’ve always heard there was more than one way.
I thought it was a Canton Kitty thread too.
echomeister
ArboristSite Operative
I don't see any way to get that cat area clean down to the base metal with disassembling the muffler.
