| 1972 | German Grand Prix · Grand Prix | Riemanoc-Yamaha | — | | Ret |
| 1972 | Dutch TT · Grand Prix | Riemanoc-Yamaha | — | | Ret |
| 1973 | Dutch TT · Grand Prix | Yamaha | 4 | | Classified |
| 1976 | Austrian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1976 | Dutch TT · Grand Prix | Suzuki | 3 | | Classified |
| 1976 | Swedish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | Austrian Grand Prix · Grand Prix | Suzuki | — | | DNS |
| 1977 | German Grand Prix · Grand Prix | Suzuki | 6 | | Classified |
| 1977 | Nations Grand Prix · Grand Prix | Suzuki | — | | DNS |
| 1977 | French Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | Dutch TT · Grand Prix | Suzuki | 1 | | Classified |
| 1977 | Belgian Grand Prix · Grand Prix | Suzuki | 7 | | Classified |
| 1977 | Swedish Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1977 | Finnish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | Czechoslovak Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | Spanish Grand Prix · Grand Prix | Suzuki | 9 | | Classified |
| 1978 | Austrian Grand Prix · Grand Prix | Suzuki | 7 | | Classified |
| 1978 | French Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1978 | Nations Grand Prix · Grand Prix | Suzuki | 6 | | Classified |
| 1978 | Dutch TT · Grand Prix | Suzuki | 5 | | Classified |
| 1978 | Belgian Grand Prix · Grand Prix | Suzuki | 1 | | Classified |
| 1978 | Swedish Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1978 | Finnish Grand Prix · Grand Prix | Suzuki | 1 | | Classified |
| 1978 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | German Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1979 | Venezuelan Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1979 | Austrian Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1979 | German Grand Prix · Grand Prix | Suzuki | 1 | | Classified |
| 1979 | Nations Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1979 | Spanish Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1979 | Yugoslavian Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1979 | Dutch TT · Grand Prix | Suzuki | 3 | | Classified |
| 1979 | Belgian Grand Prix · Grand Prix | Suzuki | — | | DNS |
| 1979 | Swedish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1979 | Finnish Grand Prix · Grand Prix | Suzuki | 10 | | Classified |
| 1979 | British Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1979 | French Grand Prix · Grand Prix | Suzuki | 18 | | Classified |
| 1980 | Nations Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1980 | Spanish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1980 | Dutch TT · Grand Prix | Suzuki | 19 | | Classified |
| 1980 | Belgian Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1980 | Finnish Grand Prix · Grand Prix | Suzuki | 1 | | Classified |
| 1980 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1980 | German Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1981 | Großer Preis von Österreich · Grand Prix | Suzuki | 9 | | Classified |
| 1981 | Großer Preis von Deutschland · Grand Prix | Suzuki | 14 | | Classified |