| 1975 | German Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1975 | Nations Grand Prix · Grand Prix | Yamaha | 9 | | Classified |
| 1975 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1976 | Dutch TT · Grand Prix | Yamaha | 7 | | Classified |
| 1976 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1976 | Finnish Grand Prix · Grand Prix | Yamaha | 11 | | Classified |
| 1979 | Austrian Grand Prix · Grand Prix | Suzuki | 11 | | Classified |
| 1979 | German Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1979 | Nations Grand Prix · Grand Prix | Suzuki | 6 | | Classified |
| 1979 | Spanish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1979 | Dutch TT · Grand Prix | Suzuki | — | | Ret |
| 1980 | Nations Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1980 | Spanish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1980 | French Grand Prix · Grand Prix | Yamaha | 15 | | Classified |
| 1980 | Belgian Grand Prix · Grand Prix | Yamaha | 10 | | Classified |
| 1980 | Finnish Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1980 | British Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1981 | Großer Preis von Österreich · Grand Prix | Suzuki | — | | Ret |
| 1981 | Großer Preis von Deutschland · Grand Prix | Suzuki | 25 | | Classified |
| 1981 | Grand Prix de France Moto · Grand Prix | Suzuki | 12 | | Classified |
| 1981 | Yu Grand Prix · Grand Prix | Suzuki | 12 | | Classified |
| 1981 | Dutch TT Assen · Grand Prix | Suzuki | 7 | | Classified |
| 1981 | Grand Prix Moto · Grand Prix | Suzuki | 10 | | Classified |
| 1981 | Gran Premio di San Marino · Grand Prix | Suzuki | — | | Ret |
| 1981 | Marlboro British Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1981 | Finnish GP · Grand Prix | Suzuki | — | | Ret |
| 1981 | Swedish TT · Grand Prix | Suzuki | 10 | | Classified |
| 1982 | Argentine Grand Prix · Grand Prix | Suzuki | 12 | | Classified |
| 1982 | Austrian Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1982 | French Grand Prix · Grand Prix | Suzuki | — | | WD |
| 1982 | Spanish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1982 | Belgian Grand Prix · Grand Prix | Suzuki | — | | DNQ |