Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thanks for the replies
Yesterday I tried to unscrew it but nothing seemed to be happening so after reading your replies I had another go today it seemed nothing was happening
then it started coming out & with a few more turns it dropped out BUT the muffler is not screwed in only push fit !!!
So if I want to fit another type i,m going to have to tap a thread      are all the machines like this or have I got an odd one