Yamaha Outboard Motors Factory Service Manual F6 and F8, Page 484Get this manual
CHARGING SYSTEM (F8CW) CHECKING THE BATTERY
Check: Battery electrolyte level and specific gravity Refer to "CHECKING THE BATTERY" on page 3-22
CHECKING THE LIGHTING COIL
Measure: Lighting coil output peak voltage Below specification Replace the lighting coilLighting coil output peak voltage (One lighting coil model): Green (G)Green (G)
rmin D.C.V
Cranking Opened Closed 3.5 3.5
1,500 3,500 Opened Opened 14 33