It was a bloody disgrace MF, but a soak in petrol, then a little screw driver, a toothpick and some sand paper actually has it brand new.
I sometimes reuse the gasket, but other times it is so far gone through years of heat that I can't.
To remove the FC muffler, you are looking at one bolt, and the two clips. I normally carefully bend the tab out from under the cowl to get the exhaust off. Bear in mind I do this in 30 seconds at the tip. i check the plug first to see for metal transfer, then rip the muffler off.
The PT muffler, I carry 2 tools into the tip - a vice grip and a cj8/cj6y plug spanner (like shown). I put the flat blade head on the edge of the lower clip and smack the T bar handle of the screwdriver. The clip pops off towards the head side of the engine. Then stick the screwdriver under the top and pop the top off.
If I buy it (95% likely), I leave the exhaust off, secure the clips and wheel it out.
To put it back on (at home), push the lower clip sideways so it points towards the front left wheel, put the muffler in place, with the pipe in the exhaust port. With the screwdriver, tap the lower clip and it will go up the beveled muffler edge and into place. Then put the top clip on the muffler, and push it down until the flat end secures on the block.
Thats the best way I can describe it without photos
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