Just follow the how-to-do. It's always better to be safe than sorry. Gas stings when it gets on the face, and eyes.
Nothing will remove all the gas from the filter, expect it to poor out while coaxing it out of the pipe clamp. Have a pan under it.
Otherwise its very simple, oh have some WD-40 and spray the pipe clamp really good the day before, it's not going to turn otherwise. Or buy a new one (really cheap) and break the old one, even faster.
JD
