Yan is correct. The -40 CDI's came off '92 model R/RS's which were 45 hp models. '93 model R/RS's had -60 CDI's & were further restricted to 40 hp. My '93 RS has been retro-fitted with a cable operated 2T oil pump at some point in its life & came with a -40 CDI fitted instead of a -60. HTH.