1987 Johnson/Evinrude CU Outboards 35A thru 55 Service Manual, Page 266Get this manual
Charging System Check ChartAll Models Where to Look Battery Cause Procedure Reference All Steps See Pages 8-4 thru 8-7
1Battery defective or worn out
1Check condition and charge
2Low electrolyte level
3Terminal connections loose or corroded 4Excessive electrical load Wiring
2Add water and recharge
3Clean and tighten 4Evaluate accessory loads
1Connections loose or corroded 2Stator leads shorted or grounded 3Circuit wiring grounded 1Damaged stator windings