2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 75Get this manual
Fuel system
Special service tools .4-1 Hose routing .4-2 Fuel and blowby hoses4-2 Intake silencer, fuel filter, and fuel pump 4-3 Vapor separator 4-5 Removing the hose clamps 4-7 Installing the hose clamps 4-7 Checking the check valve4-7 Reducing the fuel pressure 4-7 Checking the vapor separator .4-8 Intake manifold and high-pressure fuel line 4-9 Throttle control4-13 Removing the pressure regulator 4-15 Disconnecting the high-pressure fuel hose joint 4-15 Checking the fuel injector 4-15 Checking the idle speed control (ISC) .4-15 Synchronizing the throttle valve.4-16