yamaha 200 no serial or model numbers

[rejeanbiss]

Please Help me find the parts i need . I bought a 200 yam.. rebuilt 3 years a go from Outboard unlimited in pompano florida (close to day )and i d ont have any serial numbers or model numbers .i have to replace a piston because of a bad head gasket , the engine look like a 1994 but i am not sure ,,the crank is a small taper #oe 6g5-11411-02,,head gasket #is 6g5-11181-00-00 ,,base block gasket is#6g5-45113-a0-00,,reed block gasket is #6g5-13645-a1-00,, i have 2 pistons with inscriptions 6R501 (W) and 4 with 6L101 (W) mesurment is 89 to 89.5 wide,, on the block there s punch circles one is (8\ 9) ,,(\9) ,,(2\1) on the other side of the block it is 6R500 and 6R300 and 6R00.