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1961
First competition in Grand Prix racing
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1962
Focusing on machine development
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1963
The Belgium GP, the first Grand Prix win for Yamaha
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1964
First World title!
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1965
Two consecutive double championships in the 250cc class
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1966
Consecutive 125cc class win in the Isle of Man
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1967
The first 125cc title for Yamaha
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1968
Yamaha's rivals leave the series due to regulation changes
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1969
Yamaha begins supplying production machines designed for GP races
