There's nothing wrong with the way a 660 or a 661 filters the air. I put on an average 2 to 2.5 gallons through a 660/661 everyday 5 days a week. I've got a 660 with near 5 million feet of timber cut with it and it has never missed a beat. I clean the filter once a day, and that's first thing in the morning. The 661 sucks fines through the filter just like a 660. They don't mind it, haven't had a 660 or 661 ever grenade from the filtration. Good oil sharp chains and proper maintenance.The main thing I want on the 661 is prefiltration why stihl didn't do this with the 661 is beyond me. The saw is still awesome though and I want one hopefully one with prefiltration. They could do that to sell a ton of 661s and then get everyone to buy more in a few years when they come out with a newer version with a desirable added feature like prefiltration and not need to even design a new saw
... and that's The way to go.There's nothing wrong with the way a 660 or a 661 filters the air. I put on an average 2 to 2.5 gallons through a 660/661 everyday 5 days a week. I've got a 660 with near 5 million feet of timber cut with it and it has never missed a beat. I clean the filter once a day, and that's first thing in the morning. The 661 sucks fines through the filter just like a 660. They don't mind it, haven't had a 660 or 661 ever grenade from the filtration. Good oil sharp chains and proper maintenance.
You could just buy a 390XP if you want 90 couple CCS with pre filtration.that doesn't keep one from cleaning it often like prefiltration does.
It looks real nice though
that doesn't keep one from cleaning it often like prefiltration does.
It looks real nice though