I hit 1000 miles and decided to clean the outer air filter and change the inner filter. My riding has has been pretty dusty and I have my air box modded like James showed. I've got to say the service really wasn't needed. The foam air filter had a little bit of dirt but nothing like I was expecting. I think it could have went several more hundred miles before cleaning. The inner filter looked brand new. I used the yamalube air filter service kit. I wasn't impressed with the cleaner they sent but all I had was cold water (no water heater in the shop) and the bottle said to use warm water. The factory oil was very sticky and blue. Something I noticed though was the replacement filter oil was green. Also the green oil didn't feel as sticky.
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