| 1972 | German Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1972 | French Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1972 | Austrian Grand Prix · Grand Prix | Yamaha | 8 | | Classified |
| 1972 | Nations Grand Prix · Grand Prix | Yamaha | 5 | | Classified |
| 1972 | Yugoslavian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1972 | Dutch TT · Grand Prix | Yamaha | 3 | | Classified |
| 1972 | Grand Prix of the DRG · Grand Prix | Yamaha | 4 | | Classified |
| 1972 | Czechoslovak Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1972 | Swedish Grand Prix · Grand Prix | Yamaha | 7 | | Classified |
| 1972 | Finnish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1972 | Spanish Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1973 | French Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1973 | Austrian Grand Prix · Grand Prix | Yamaha | 9 | | Classified |
| 1973 | West German Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1973 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1973 | Czechoslovak Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1973 | Swedish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1973 | Finnish Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1973 | Spanish Grand Prix · Grand Prix | Yamaha | 2 | | Classified |
| 1978 | Spanish Grand Prix · Grand Prix | Suzuki | 16 | | Classified |
| 1978 | Austrian Grand Prix · Grand Prix | Suzuki | 10 | | Classified |
| 1978 | French Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | Nations Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | Dutch TT · Grand Prix | Suzuki | — | | Ret |
| 1978 | Belgian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | Swedish Grand Prix · Grand Prix | Suzuki | 14 | | Classified |
| 1978 | Finnish Grand Prix · Grand Prix | Suzuki | 10 | | Classified |
| 1978 | British Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | German Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1987 | Spanish Grand Prix · Grand Prix | Honda | 18 | | Classified |
| 1987 | German Grand Prix · Grand Prix | Honda | 11 | | Classified |
| 1987 | Italian Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1987 | Austrian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | Yugoslavian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1987 | Dutch TT · Grand Prix | Honda | 21 | | Classified |
| 1987 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | British Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1987 | Swedish Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1987 | Czechoslovak Grand Prix · Grand Prix | Honda | — | | Ret |
| 1987 | San Marino Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1987 | Portuguese Grand Prix · Grand Prix | Honda | 11 | | Classified |
| 1988 | Spanish Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1988 | Expo 92 Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1988 | Italian Grand Prix · Grand Prix | Honda | 19 | | Classified |
| 1988 | German Grand Prix · Grand Prix | Honda | 25 | | Classified |
| 1988 | Austrian Grand Prix · Grand Prix | Honda | 12 | | Classified |
| 1988 | Dutch TT · Grand Prix | Honda | 17 | | Classified |
| 1988 | Belgian Grand Prix · Grand Prix | Honda | 25 | | Classified |
| 1988 | Yugoslavian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1988 | French Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | British Grand Prix · Grand Prix | Honda | — | | Ret |
| 1988 | Swedish Grand Prix · Grand Prix | Honda | 20 | | Classified |
| 1988 | Czechoslovak Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1988 | Brazilian Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | United States Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1989 | Spanish Grand Prix · Grand Prix | Honda | 16 | | Classified |
| 1989 | Nations Grand Prix · Grand Prix | Honda | — | | Ret |
| 1989 | German Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1989 | Austrian Grand Prix · Grand Prix | Honda | 15 | | Classified |
| 1989 | Yugoslavian Grand Prix · Grand Prix | Honda | 16 | | Classified |
| 1989 | Dutch TT · Grand Prix | Honda | 16 | | Classified |
| 1989 | Belgian Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1989 | French Grand Prix · Grand Prix | Honda | 17 | | Classified |
| 1989 | British Grand Prix · Grand Prix | Honda | 18 | | Classified |
| 1989 | Swedish Grand Prix · Grand Prix | Honda | 14 | | Classified |
| 1989 | Czechoslovak Grand Prix · Grand Prix | Honda | 18 | | Classified |