Lay the muffler down on concrete for about an hour to cool.

Grab the exhaust pipe and shake the ash out of the muffler.

If you do not want to paint your muffler before reinstalling it, remove the plastic bag from the engine exhaust hole and follow steps 1-3 in reverse order to reassemble your moped.

Use an old barbecue wire brush or metal scraper to remove rust from the outside of the muffler and piping.