ORIGINAL: MSS999
Coincidently, I was spending some leisure time over the weekend looking at chainsaw short blocks on the well known auction site and came across this Echo CS500EVL. Yours may look something like it.
I can't quite see how one would extract the crankcase out of that - is there a crank case inside the red casing or is the red casing the crankcase?
MSS.
Update: Think I've answered my own question with the attached parts diagram. It may also help with the CS302.
Like he said. It is not to bad, just time consuming. Lop off unnecessary bits and a svelte block will appear. Make a back plate that is held in place with the four screw that hold the block together. I use a band saw for most of it. I then go to a disk sander with about 50 grit paper. CLEAN UP THE FILINGS! The next time you touch steel to the disk you will make sparks and the bench will erupt in white hot fire that does not extinguish with any normal measures. The crankcase is magnesium. I had shop fires twice before I got smart and cleaned up the mess immediately. You will also have to be handy with a lathe to make the prop hubs. The link is to a CS-650 I did. I have also done two CS-510s. Good engines all.
http://www.rcuniverse.com/forum/m_94...tm.htm#9479641