Pre filter
- Thread starter Coyoteone
- Start date
Auto Doc's
Lawn Addict
Hello C.,
Yes, lightly oil but squeeze out excess with paper towels. The thin film of oil captures the super-fine dust particles that can easily pass through a dry filter otherwise. The film of oil also helps preserve the foam for years to come. To clean the foam, just use dawn dish soap and hot water, let dry and then re-oil.
Many years ago, engines were equipped with oil bath air cleaners, and the intake air was drawn through the oil before entering the carburetor. They were the most efficient, but they were also messy and people hated to fool with cleaning them.
Yes, lightly oil but squeeze out excess with paper towels. The thin film of oil captures the super-fine dust particles that can easily pass through a dry filter otherwise. The film of oil also helps preserve the foam for years to come. To clean the foam, just use dawn dish soap and hot water, let dry and then re-oil.
Many years ago, engines were equipped with oil bath air cleaners, and the intake air was drawn through the oil before entering the carburetor. They were the most efficient, but they were also messy and people hated to fool with cleaning them.
Last edited:
Thanks that what I was thinking, but have heard not to do it , I’m old school and back in the day we oiled about everything
Thanks
Auto Doc's
Lawn Addict
Hello C.,
Too many new age parts changers around that never learned the finer points of servicing.
Most would lose their mind if they had to replace a set of ignition points in an older engine.
Too many new age parts changers around that never learned the finer points of servicing.
Most would lose their mind if they had to replace a set of ignition points in an older engine.
What I do is
1.Start with a new main filter. Apply a thin bead of GE 100% silicone sealant to effectively glue the filter on. Provides a no BS 100% grit and dirt seal to/for the filter/s.
2.Oil the foam pre filter as Briggs used to say. SAE 30W oil, fully saturate the foam. Use a new clean red rag, squeezing out excess oil. Put it on the main filter.
Leave the filter alone until she say takes a couple extra cranks to start or say a couple extra pulls on the rope. Most of the time, MINUS grass scalping and bagging, this is a LEAVE IT ALONE task replacing the main and pre filters yearly. That for me is after the early spring scalping dust bowl mess mow.
Thin bead of silicone costs you pennies. 30W oil the same. Not a big deal as some think.
1.Start with a new main filter. Apply a thin bead of GE 100% silicone sealant to effectively glue the filter on. Provides a no BS 100% grit and dirt seal to/for the filter/s.
2.Oil the foam pre filter as Briggs used to say. SAE 30W oil, fully saturate the foam. Use a new clean red rag, squeezing out excess oil. Put it on the main filter.
Leave the filter alone until she say takes a couple extra cranks to start or say a couple extra pulls on the rope. Most of the time, MINUS grass scalping and bagging, this is a LEAVE IT ALONE task replacing the main and pre filters yearly. That for me is after the early spring scalping dust bowl mess mow.
Thin bead of silicone costs you pennies. 30W oil the same. Not a big deal as some think.
StarTech
Lawn Royalty
Now wait a minute, some of us don't have a mind to lose after being driven crazy by our vendors.
True but at MY house, I have a crap ton of spray cans. Everything known to us we can buy seems like LOL.
I like the old way so I know there is oil on/in it. I like crushing it deep into the filter. Sprays sit on top seems like. Not a fan.
Auto Doc's
Lawn Addict
Keep It Simple Silly (KISS). A few drops of oil spread into a dry foam pre-filter is easy.
Another principle that I believe in is to "work with what you have".
Fancy spray oils for air filter such as K&N brand is expensive and often overused. I run into problems on vehicles all the time because of this stuff.
Another principle that I believe in is to "work with what you have".
Fancy spray oils for air filter such as K&N brand is expensive and often overused. I run into problems on vehicles all the time because of this stuff.