Chainsaw Repair

see that is where you get into trouble , are these real worksaws or run a couple tanks a year cutting wood or cookies and are called worksaws , If the saw is going to be run 8 plus hours a day 5 or 6 days a week and is to last 2000 hours plus  then finger ports are not the way to go , One thing I have built and that is alot of 7900's , I even built 4- 7300/7900 for Dolmar themselves with 3 of those going to Africa , 7900 to me is a great saw and I like them alot , the only thing I change is the ring , I like the husky ring better and I feel it stands up better . Now on the saws for dolmar I had to use their piston and their coil setup so that limits you alot right there cause the 7900 sure is a narrow skirted piston so ports are narrow as well . These saws they are putting different pistons in that makes you build a spacer plate and lots of other stuff is not what I call a worksaw , Reason for so much blow down is the crankcase volume is very tight on them , if you raise the transfers up like on a ported 372 it will lay down in the cut once you put it under load , I'm talking like cutting 20 plus inch stuff