I was givin a 97 Foreman 400.The previous owner took the head and cylinder off because there was a rattling noise.I am just guessing that the Timing chain and/or the tensioner is the noise.He said he tore it down,did not see the chain,so he figured that the case has to be split to fix it.I told him no,the chain is behind either the front or back cover and it should not be a difficult fix.He asked me if I wanted the machine and once it's fixed we can go riding....I cannot believe I got this machine for free..I am SOOOOO stoked to fix it.I have every piece,nut and bolt to put it back together and It's in decent shape for the amount of miles on it (8500)---but after reading some of these posts'I know that really nothing for a Honda.Now my stupid questions are I know I want a D.I.D. chain.but is Honda the only place to get the tensioner? has it been updated to last longer? I have been reading on here since I got the machine last weekend,and was hoping someone who has already replaced thier chain and tensioner,put something under the "how to" section but no such luck.Any help or ideas on this---like where or how to do this.I need to buy a battery,check/change the tensioner and one last stupid question....where is the brake fluid resivior(sp?)The previous owner went out and bought a New Arctic Cat 700, but with a few exceptions,I have always ridden Honda started with a cb360 to a 550 four super sport(I had two of them) a 1985 V65 Sabre-loved that bike and I just sold my Polaris 330 Magnum,(would not ever buy another Polaris )---that is just my opinion I just do not like them ,so yes I am back on Honda,and I hope to keep this one for a while.I will try to post some pics later.THANKS MUCH!!!