I got the 4400 finished today and started a new thread on it. http://www.arboristsite.com/chainsaw/169037.htm
Found a great looking P/C but it failed a vac test badly. It did hold somewhat on a pressure test.
Some grease on the PTO side seal showed the vac leak in a hurry.
It runs great now.
Mark.
What few saw engines I've gotten into, I have expected to find double lip crank seals but have only found single lip. I don't see how they could hold much vacume to begin with.
Kind of disturbing.
Carl.