AIRFILTER
I'd order the manual from our FORUM sponsor Beartooth and get the discount...nice people. Your airfilter can be cleaned several times, very carefully, and re-oiled. You will find that rain WILL affect the airfilter, esp heavy rain... Although I'm a 250R nut...I just wondered how you liked your ZZR-600. I could ask 20 questions or so, but you'd get bored with them... I can't set upright (back surgeries) and the ZZR600 would make a great (?) road bike?