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I asked the service dept this over the weekend, They told me around 2500 or more depending on how dirty it is. I also checked numerous postings and it looked like 5000 miles or once a year (if you dont get to 5k)was the average..
The web site showed some nasty looking filters,
I do mine at the beginning of the riding season... but anymore the red color doesn't stick around very long... I think I'm going to get a new filter. And possibly plan on getting a new one every 2 or 3 years...
I have 2 filters and it's nice. That way I can clean/oil one and have it ready to bolt on when I need to change over.
But my answer to the OP - I go every oil change. Which is between 3.5 & 5K miles.
Last time I cleaned mine I thought about doing this. B/c of drying time, it is difficult for a daily rider to do air filter maintenance w/o missing a day of riding.
Mine isn't totally open. Not real sure if whater is getting to the filter or not. Have heard that once it gets rained on ya gotta re-oil it.
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