Hi guys, I had to change all the air filters on Honda's last Monday, that included 2 mowers, blower, strimmer and hedge trimmer.....all filters were genuine Honda spare parts, and all came pre-oiled in a sealed packet.
Most of the foam filters I have come across recommend as you have said grumpy, clean with a non flammable solvent or warm soapy water, let dry completely and then re-oil and wring out carefully leaving only a film of oil behind.
The filter on this machine must be very fine sponge to be able to run dry and still do its job of keeping the dust out.
