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Japanese Bikes / Honda cb250 k4 cam shaft
« on: November 21, 2007, 05:46:48 AM »I have a 1972 cb250 k4 which keeps on siezing on the end bearing on the cam shaft on the left hand side, I have heard that early k4's had this problem and it was something to do with a gasket in the bottom end restricting the oil supply to the top end. Has anybody else had this problem, and got any suggestions as to the cause or a cure?