PJA,

Filters are very easy to change.
1. Remove engine cover. Just give it a good tug straight up.
2. Flip it over and unscrew the the air cleaner boxes.
3. Clean box and make sure area for filter rubber is clean.
4. Replace filters (By the way you will need two filters) and screw boxes shut.
5. replace engine cover - make sure clips are lined up and reconnect breather hoses.
6. Go drive!!!!!!!!!!