My bike still has the original "ears" for now.
My question: How often should you replace the filters in them? Or, can they be cleaned and re-used, and if so, how?
Thanks ahead of time!
Just checked the Clymer manual and they recommend replacing the foam filters every 15,000 miles or after 5 cleanings, OR every 2 years.
That seems to indicate the filters should be cleaned and re-oiled every 3,000 miles, or with every oil change.
Clymers also says the filters can be cleaned with a mild high flash point solvent, then rinsed out with detergent and water, then clear water. Something like kerosene or paint thinner should be ok.
I cleaned the K&N filter on my car with just hot soapy water a few months ago. It was quite dirty and required a couple of spray applications of *Simple Green*, along with 3 changes of hot water and detergent before it was clean enough to satisfy me.
The Clymer manual describes the 30 weight oiling method that ZCragRatt mentions, but others have warned that this method makes it way too easy to over oil the foam, restrict air flow, and cause a rich mixture. Special filter oil is available at motorcycle dealers, and I recommend using that or the K&N filter oil that I used on my car filter.
ZCR is right about not wringing or twisting the filter elements.
Press the filter between layers of shop cloths or paper towel on a flat surface to absorb any excess oil.
I`m sure more complete directions are in the online service manual on the TOC site or the searchable version on Kanuck69`s sig line.