- Aug 30, 2002
Alright, I might finally fall and buy a 4 stroke (YZ450F) :scream: . My question is what type or maintenance does it require. I am used to changing rings every 10 hours and piston every 20 in my 125. Do you still have to do this with the thumpers. How hard is that. I know freq engine oil change is important. Anything else. Thanks!!