I bought a 9.9hp Gamefisher/force from a friend and can't determine the year. There is no plate on the mout with the model #. On the inside of the transom mount it reads RW617532. The stator plate has FIR-4001B, The block has a J on the top and K142542 on the side, The head has a karge 286, the carb has F01A944, under the stator reads 286144, under the tiller handle reads 286078-2. These are all the umbers I can find, but can't find any reference to them anywhere on the web. Any help would be greatly appreciated.