1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 51Get this manual
INSP ADJ
PERIODIC SERVICE
4Fill th PT nit ith dra ulic fluidRecommended hydraulic fluid: ATF Dexron II 5Install th reserv oir plu gReservoir plug: Nm (0.7 kgf, 5.1 ft lb)