Suzuki FU150SC Manual page 24

« Remove the primary drive gear nut with the special tool.
09910-20115 : Conrod holder
ACAUTION
This Primary drive gear nut A) has left hand threads.
« Remove the primary drive gear) oil pump driven gear(2) by
remove the circilp and key
« Remove the oil pump drive gear ©).
« Remove the balancer shaft bolt and washer