2009 Yamaha F40 Outboard Service Manual, Page 359Get this manual
Maintenance
Checking the engine start switch and engine shut-off switch
1Check the engine start switch and engine shut-off switchSee "Checking the engine start switch and engine shut-off switch" (10-4)
Checking the fuel filter
1Check the fuel filterSee "Checking the fuel filter assembly" (6-8)
Checking the fuel joint and fuel hoses (fuel joint-to-fuel injector)