Cleaned my spark arrestor the other day for the third time. Boy was it dirty. Good thing Honda suggest cleaning it so often. I think my machine would have only ran another 50,000 to 100,000 miles without cleaning it. Going by this logic, I think that maybe the machine could also go 3,000 to 5,000 miles on oil changes, specially when running synthetic oil. Question, has anyone on hear had a dirty spark arrestor when their machine was running good? Just wondering.