2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 90Get this manual
Fuel system
2Measure the resistance of the fuel injectorsReplace if out of specification
Removing the pressure regulator
1Remove the intake silencer and the port intake manifold2Disconnect the hose and 2, and then remove the pressure regulator 3
Digital multimeter: YU-34899-A
S69J4125
Disconnecting the high-pressure fuel hose joint
1Disconnect the high-pressure fuel hose joint with the collar slide from the end of the joint