2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 366Get this manual
Starting system Checking the fuse
1Check the fuse and fuse holder for continuityReplace if there is no continuity54Check for continuity between the starter relay terminalsReplace if there is no continuityCheck that there is no continuity between the starter relay terminals after disconnecting the brown or black leadReplace if there is continuity
Checking the wiring harness (10 pins)
1Check the wiring harness for continuityReplace if there is no continuity