Yamaha Marine Outboards Factory Service / Repair/ Workshop Manual 225G 250B L250B, Page 272Get this manual
TILT RAM ASSEMBLY AND GEAR PUMP UNIT (200H, 225GV200, V225)
2Remove: Check valves and 2
NOTE: To remove the check valves, cover the gear pump housing with clean cloth and then blow compressed air through holes and b7330
INSPECTING THE TILT RAM