After the gear idle broke on my 10hr old '04 YZ450 I took it back to the dealer (Island Cycle Sales, Staten Island NY)to find out what happened and see if it was under warantee. I found out the gear idle broke in half. I was acused by the dealer of kicking it to hard, then fouling the plug and eventually not using the hot start. First, none of these acusations were true. Secondly, the mechanic had not even broken down the bike yet. Then I find out the part is on back order and Yamaha will pick up all of the costs to fix it. I think fine.....if the parts on back order it must a common problem. (Some insight - I was a pro level rider almost 15yrs ago and want to get back into racing in the 30+ class) Anyway, after a torturous three weeks I finally got my bike back. The first day I take it out the engine seizes. I call the dealer imediately and I am told to bring it back. I bring the bike back and the dealer starts accusing me of using the wrong gas..then persists on telling me that it is a detination problem. I know when an engine seizes, so I told him there was no oil getting to the engine. When I checked the dip the oil was full and barely warm...it should have been hot after 25min of riding the track. Plus, you know that nock right before it seizes. The dealer gets angry at me and begins to tell me that it could not be an oil problem and that there is no way it could be his mechanics fault. He again trys to tell me that it is probably a detination problem...how would he know he did not break it down yet nor was he riding it. After all of this I tell the dealer not to fix it until I can talk to Yamaha...I just don't trust the guy at this point. The next morning he calls me and tells me that his mechanic missed a hair line crack in the oil pump and that they will replace all of the damaged parts. First, I don't believe that it would have seized so quickly if it was a hair line crack. Secondly, would you let this mechanic rebuild your bike after he caused the engine to seize and consistently blamed the problem on you? I have since called Yamaha to try to get them to send a tech to the shop to look at the engine but they currently don't want to help me. I feel like the dealer was lying to me to save himself some money and now I am getting no support from Yamaha. I have also filed a complaint with the dealer to the BBB but all I want is to ride. Does anyone have any suggestions on what else I can do to expediate the resolution of this problem? and, is it possible for a hair line crack to seize the engine that quick on this bike?