Battery will not charge
Clean and tighten connections.
Loose or faulty fan/alternator belt.
Adjust belt tension or change it
Load system indicator light comes on when engine in operation
Increase speed.
Defective battery
Recharge or change battery.
Defective alternator
See your John Deere Dealership.
Fan belt slip
Increase belt tension.
Starter motor inoperative
Disengage PTO lever.
Low battery voltage
Check charge.
Blown fuse
Replace fuse.
Starter cranks slowly
Oil in crankcase too viscous
Use oil of proper viscosity.
Loose or corroded connections
Light system does not work but rest of electrical system is operative
Relay inoperative
Replace diode module.
GB52027,0000062-19-20140701