stopped up muffler

[Ken yn2000-HT]

My old YM2000 completely stops up the muffler about every180 hours, I ordered a new one, but I want to salvage or clean the oldest one out. Can someone tell me how they might have done this or what they used?

 

[alan-HT]

I'd take it off, whack it, shake it, empty it. If you have it vertical, maybe stuff falls into the opening. It's four little bolts to undo it from the manifold, swing it a quarter-turn down, and reinstall pointing forward.

 

[Norm-HT]

There's no magic, just remove it and do whatever is necessary. Unfortunately, I think that is usually caused by internal baffles rusting and falling out of position.