Originally Posted by KaanDuro
I bought my bike about 2 months ago.
Had 10 000 maintenance and had her to the woods 4-5 times since.
I clearly remember one of the guys took the air filter, used an air gun to clean the filter and put it back.
Anyway, I bought a twin-air filter and no-toil filter oil.
I had a chance to change the air filter tonight, but first I went downstairs to take off the old one.
As I opened the air filter cover, I got very mad, because there was dust in the clean side of the filter. The filter was completely black in color and full of dust.
So, I don't know what should I do right now, should I change the engine oil, because some dirt has clearly past the filter and got the the engine block. Or is there something I can do to prevent future damage ?
Sometimes it is best to do the maintenance yourself.
What damage has been done, is done. I would change the oil and filter and install the new filter with filter oil and never let someone else work on your bike.
Also make sure to clean any dirt in or around the throttle body before your start it.