| 1974 | French Grand Prix · Grand Prix | Yamaha | 4 | | Classified |
| 1974 | German Grand Prix · Grand Prix | Yamaha | — | | DNS |
| 1974 | Austrian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1974 | Nations Grand Prix · Grand Prix | Yamaha | 2 | | Classified |
| 1974 | Dutch TT · Grand Prix | Yamaha | 2 | | Classified |
| 1974 | Belgian Grand Prix · Grand Prix | Yamaha | — | | Ret |
| 1974 | Swedish Grand Prix · Grand Prix | Yamaha | 1 | | Classified |
| 1974 | Finnish Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1974 | Czechoslovak Grand Prix · Grand Prix | Yamaha | 3 | | Classified |
| 1975 | French Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1975 | Austrian Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1975 | German Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1975 | Dutch TT · Grand Prix | Suzuki | 5 | | Classified |
| 1975 | Finnish Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1975 | Czechoslovak Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1976 | French Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1976 | Austrian Grand Prix · Grand Prix | Suzuki | — | | DSQ |
| 1976 | Nations Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1976 | Belgian Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1976 | Swedish Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1976 | Finnish Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1976 | Czechoslovak Grand Prix · Grand Prix | Suzuki | 2 | | Classified |
| 1977 | Venezuelan Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | Austrian Grand Prix · Grand Prix | Suzuki | — | | DNS |
| 1977 | German Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | Nations Grand Prix · Grand Prix | Suzuki | 12 | | Classified |
| 1977 | French Grand Prix · Grand Prix | Suzuki | 7 | | Classified |
| 1977 | Dutch TT · Grand Prix | Suzuki | 7 | | Classified |
| 1977 | Belgian Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1977 | Swedish Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1977 | Finnish Grand Prix · Grand Prix | Suzuki | 7 | | Classified |
| 1977 | Czechoslovak Grand Prix · Grand Prix | Suzuki | 6 | | Classified |
| 1977 | British Grand Prix · Grand Prix | Suzuki | 3 | | Classified |
| 1978 | Spanish Grand Prix · Grand Prix | Suzuki | 7 | | Classified |
| 1978 | Austrian Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1978 | French Grand Prix · Grand Prix | Suzuki | — | | Ret |
| 1978 | Nations Grand Prix · Grand Prix | Suzuki | 7 | | Classified |
| 1978 | Belgian Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1978 | Swedish Grand Prix · Grand Prix | Suzuki | 8 | | Classified |
| 1978 | Finnish Grand Prix · Grand Prix | Suzuki | 4 | | Classified |
| 1978 | British Grand Prix · Grand Prix | Suzuki | 5 | | Classified |
| 1978 | German Grand Prix · Grand Prix | Suzuki | 9 | | Classified |