I wanted a 20" bar chainsaw so I dug my dad's old 330 Homelite out. I got it cleaned up and put new chain on a couple of weeks ago, but could not make it idle. I searched the internet and found that the boot that goes between the carburetor and engine gets old and cracks, so I ordered a new one. You have to take the case apart to change it, so it is quite a job. I took it apart today and the old boot was hard and cracked. I installed the new one, adjusted the mixtures and it runs pretty good. I washed all the parts off in the parts washer while it was apart, so it is clean as new now. I think it must have been starting to crack when my dad had it because the mixture screws were way further out than they needed to be.