2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 345Get this manual
Power unit
Good operating condition? Yes Check the high-pressure fuel pump relay
Replace the pressure regulator
Is there continuity? Yes
Replace the high-pressure fuel pump relay
Check the fuel system using the Yamaha Diagnostic System
Ignition system
Check the ignition spark gap using the spark gap tester
Out of specification? Yes Replace the spark plug