| 1988–89 |
WGP. Mechanic NSR250 with M.Shimizu |
| 1990 |
Japan. Mechanic NSR500 with S.Ito |
| 1991-92 |
WGP. Mechanic NSR250 with L.Cadalora |
| 1993 |
Japan. Chief Mechanic NSR250 with T.Aoki |
| 1994-96 |
Japan. Chief Mechanic RVF750 with T.Aoki |
| 1997 |
WGP. Chief Mechanic NSR500V with T.Aoki |
| 1998 |
WGP. Chief Mechanic NSR500V with S.Gibernau |
| 1999-00 |
WGP. Chief Mechanic NSR500 with S.Gibernau |
| 2001-02 |
Japan. Chief Mechanic VTR1000 with M.Tamada |
| 2003-04 |
Technical staff for All Japan Championship road race |
| 2005 |
MotoGP. Chief Mechanic RC211V with M.Biaggi |
| 2006-08 |
Support staff for MotoGP |
| 2009-10 |
Project Leader of Moto2 |
| 2011 |
Director, Assistant to Team Principal |