I wish people that have a problem would start with asking a simple question, instead of raising the red flag on a saw model in the heading of a thread! -and then the reason for the problem turns out to not be compatible with the heading!
I agree with making sure things are right before posting, but the filter really does fit as it's supposed to. Round hole, round peg, not square to round, and the fit is good and snug. The original dust covering on the
inside of the filter housing was thick but very fine and was coming in from through the filter mesh, not through an incorrect fit.
I would not have thought that there was more than one filter for a given saw, didn't even cross my mind.
Hey, at least the post got others to check their saws, and as it turns out, I'm not the only one with an issue.
Last, if a filter for an internal combustion engine lets that much dust through, and it's the one the company ships with the saw, then it's a poor design.