Yamaha Marine Outboards Factory Service / Repair/ Workshop Manual 225G 250B L250B, Page 273Get this manual
TILT RAM ASSEMBLY AND GEAR PUMP UNIT (200H, 225GV200, V225)
ASSEMBLING THE GEAR PUMP UNIT
CAUTION:
Install all components in their original direction and position for proper assembly and operation
1Install: Balls (3.18 mm0.125 in) Shuttle valves NOTE: Apply grease to the balls to prevent them from falling out of the gear pump7340