If you look at the experiences most people have with this mower you'll probably decide to just take it to the dump, and get a decent one to replace it. I've put three replacement belts on our 330, and they don't stay on for more than one mowing session on a small lawn. This machine has caused a LOT of domestic strife as well as being hopeless for the task it's supposed be designed for - sorry to be the bearer of bad news... I will do a lot more research before buying another mower...
alan duns, July 2007