1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Manual, P/N 507122, Page 313Get this manual
Charging System Check Chart Where to Look Cause Procedure Reference
Battery
1Battery defective or worn out 2Low electrolyte level 3Terminal connections loose or corroded 4Excessive electrical load
1Check condition and charge 2Add water and recharge 3Clean and tighten 4Evaluate accessory loads 1Clean and tighten 2Perform ohmmeter tests 3Perform ohmmeter tests
Accessory Service Manual
1Connections loose or corroded 2Stator leads shorted or grounded 3Circuit wiring grounded