My Buddy just bought an 07 YZ250F and after he got it home we looked in the air filter and it was dry and dusty. I took the filter off and there was a small layer of dust or dirt on the other side and now Im worried. It runs GREAT and sounds great but I want to know if I should keep it or not
i just bought a 2003 yz450f with the head redone with new valves and i have already changed the oil and filter,new air filter,put ice antifreeze in it.
i can see the new gaskets on the top end,but i still serviced the bike before rideing it.