Ok, so my bud has a 03 raptor. he's got prob 100+hrs on it. Had a few oil changes and such done, anyways, how soon does he need to get the valves adjusted/checked? Hes having a werid problem after he shuts the bike off where it almost doesnt want to rev, he can idle and put along, but if he gives it a shot it kinda bogs. Doesnt happen all the time, prob only two or three times in the last two months..any ideas?

 

If he's got 100+ hrs on it then the valves needed to be checked a LONG time ago. I'd check/adjust them then go from there. Thats a long time to go with out checking them.