I just aquired a 630 electolux and have performed a search on this sight. I also tried to biring up the chainsaw collectors sight but it must be down or i have the wrong address. What is the max& minimum bar length that can be used. What is the cc rating of this saw, and what is the saws weight with an 18 in bar. I am mixing at a rate of 50:1 amsoil, is this ok? what years were they produced. I am going to use this saw for the 12" and under logs as my 455 husky gets a bit heavy by the end of the day and I dont always need the 24" bar thats on it. Thanks in advance Steve..