no u r not the only one!!!!my 03 wr450 lunched the stator etc when the nuts holding flywheel too starter sprocket all completely sheared off....lots of fun i loved my 450 but am not goin too put up with this.the first thing the mechanic said was never seen that before and did i want too remove the starter....this bike has only 5000kms on it (had a year off bike with a wrist rconstruction) in new zealand these bikes are road legal so im getting as much info together so i can sit down with yamaha
and get some joy... the consumers act
of new zealand states that a product should be fit for its intended purpose,and im thinking that this problem has shown it is not fit for its purpose....if it was the gearbox or piston@rings i wouldnt be worried but this kind of fault should never happen. so guys i need more info,how many of u have had this happen and what did yamaha
do about it? thanks!!