I have just been fettling this lovely little Hasag without great success. It has a big halo and black mantle disease, which points to a badly worn jet, no great problem apart from the thread seems to be different to my spares which only go on just over 1 turn. It was otherwise ready to go with just some oil on the pump washer and a mantle. The glass is a replacement that I found and some form of pre heating needs sorting as I can't light it with the glass fitted at the moment. Until it's running properly that is not a priority. Apart from not running well it's a beauty. Enjoy the pics.