Chainsaw Jim
CJ Saws, LLC
I had to install a new piston in my 576xp so I decided to go through it to eliminate a few casting burrs and case pattern mismatch.
I got a little ahead of myself and started grinding before taking any pics.
The intake had some casting burrs inside the two outer holes. I'm not sure there was much restriction there due to the tiny intake boot anyways. But I cleaned that up a bit anyways...
Then I moved on to the lower transfers..
With the base gasket removed the squish was too tight. I shaved the little band off the edge and that brought the squish to a nice and cozy .025. I didn't actually take anything other than the little band around the edge to even out the area. If I was to shave it any more to make it cleaner then I'd have to cut the base to lower the jug. Which this particular saw actually had an uneven base. It wobbled on the bare case and I had to take about 0.002 from each side before it would sit flat. Very poor quality control from the factory.
Now for the exhaust...
I got a little ahead of myself and started grinding before taking any pics.
The intake had some casting burrs inside the two outer holes. I'm not sure there was much restriction there due to the tiny intake boot anyways. But I cleaned that up a bit anyways...
Then I moved on to the lower transfers..
With the base gasket removed the squish was too tight. I shaved the little band off the edge and that brought the squish to a nice and cozy .025. I didn't actually take anything other than the little band around the edge to even out the area. If I was to shave it any more to make it cleaner then I'd have to cut the base to lower the jug. Which this particular saw actually had an uneven base. It wobbled on the bare case and I had to take about 0.002 from each side before it would sit flat. Very poor quality control from the factory.
Now for the exhaust...