husqvarna

I think the correct replacement part # for the Husqvarna RZ4623 muffler is 532149723 It sat unused by the prior user for at least a year, maybe more, and now that we're running it the muffler seems to be getting louder, fast. Will I also need the gasket set? Does the picture suggest that I...

When replacing the fuel tank vent - is it just pulled out and the replacement pressed down in its place? Or, is there a nut or clip inside that has to be, somehow, accessed? Thanks!

The hose and clamp appear to to be intact. Where else should I look for the cause of a tiny but dangerous leak in this area, please? Sorry for all the questions - I'm trying to get this used machine in good shape for the Summer. Thanks!