Air Filters

[eyolf]

I had need of a new air filter, and called a dealer for one today. My first choice was the felt flocked model, of which he has one. So far, so good.

Apparently there are 3 types available to fit modern chain saws...the felt type that I am familiar with, and two types of fine nylon mesh screen types, on 40 micron and one 80 micron.

Now I am assuming that the 40 micron will stop a smaller particle than the 80 will, and somebody told me (I think when I replaced the filter on a Jonsered saw recently) that the nylon mesh is a "cold weather" item. What's the real deal on that? why all the different kinds?

The kid at the parts counter had no idea.

 

[stihltech]

air filter

I can only speak for Stihl saws, and I admit I have no idea about microns. The original filters on older swas were fine screen. We then went to a flocked material. The latest version is a felt type of material. The felt seems to be the best, but it all comes down to how CLEAN you keep it. When you make big chips, they all stay clean longer. When you make fine sawdust, they all plug up. Truthfully, I never had any problems with the wire mesh filter. Just had to KEEP IT CLEAN!
I hope I made my point. Thank you.

 

[builder]

I still have a screen filter for my 038,have a flocked one too.I've always used some oil on the screen and it works fine,lasts forever.I agree keep it sharp and clean and don't worry.

 

[nelly]

You say to keep it clean and I have pulled mine out and brushed it off. What is the best way to clean one of those felt type air filters?

 

[Methoss084]

From what I understand, the screen type filters are designed to allow maximum airflow. Any particles small enough to pass through the screen are supossed to burn up in the combustion process. I thought that sounded a bit odd when I first heard that. Can anyone confirm this?

 

[builder]

they flow enough more air that I'd do a carb adj. when switching back and forth,definately let more little dust into the motor but I think a little oil helps a lot,this is very fine screen.kinda like the difference between k&n and paper in a car(by the way,I did oil analysis on my tundra with paper and k&n and there was twice as much dirt in the oil with k&n type.7ppm vs15ppm after 5K)

cleaning-everybody's got an opinion,I take my filter off and blow it out from the inside with a little compressed air from a distance,and then when it gets crudded up with stuff the air won't get I dip it in mix and blow it dry.

 

[TheTreeSpyder]

Well, if it is small enough to run through the carb, not get smeared on intake port, it'd probably get pulverized and burnt!

 

[stihltech]

air filter

Blow then out from inside with low pressure air. If very oily, wash them out. I recommend Dawn dish detergent and water. In a pinch, Brakekleen. Always been leery of the gas thing, but I know a lot of operators do it. Main thing, clean it.

 

[Sethro]

I run the Holeshot foam filter you can get from Bailey's on my 044, The stock Stihl filter is about 89 CFM ,Holeshot is 135 CFM .
With the muffler work I've done it runs great. It has to be washed about every two days with soap and water.It also is wise to richen it a little bit. Seth