Pre/ filters

[clueless 3,248]

Thoughts on pre air filters on kohlers. Back in the day kohler didn't have them, I've heard two different sides, yes, and no. Not trying to start anything, just curious.

[wallfish 18,127]

I use them. Collects the larger particles and it's real easy to clean keeping the paper filter cleaner.

What are the negatives you heard?

[kick 72]

Grab yourself a can of pj1 foam filter oil (motorcycle product) and keep a light coat on them.  You will be amazed what it will trap. Your main filter won’t work that hard. 

[953 nut 60,072]

I use them on my mower tractor,   once every three or four mowings I take it off and wash it with soap and water then next day when it is dry I put a little motor oil on it and squish it all around and wrap it up in a clean rag. Next time I mow I put it on again. You would be amazed how much fine dirt it catches.

Edited June 9, 2019 by 953 nut

[lynnmor 7,824]

They do make the paper filter last a lot longer.  One thing to watch for is that the paper filter might look pretty good but be plugged with the very fine dust that got thru the pre-filter.  I had my air filter light come on and the filter looked OK, but checking it with a light inside and comparing it with a new one, it was night and day different.

[ebinmaine 72,719]

1 hour ago, wallfish said:

 What are the negatives you heard?

That's what I was wondering....

 

[8ntruck 7,842]

I was going to start a similar thread.  Glad to see that you did it.

I was guessing that the pre filter would grab the larger crud, probably making the main filter last longer.

[ET160 30]

Where do you get them?

[ebinmaine 72,719]

41 minutes ago, ET160 said:

Where do you get them?

I don't know about for the smaller engines but for the 12 and 16 horse you can order them on the fleabay or from small engine dealers as a kit package with the foam and the air filter.

 

[The Tuul Crib 7,339]

I use mine for the same reason to make 

the main filter last longer. They are there for a reason.