Electrical System Troubleshooting

Symptom Problem Solution

Battery will not charge

Loose or corroded connections.

Clean and tighten connections.

Sulfated or worn-out battery.

Check electrolyte level and specific gravity.

Loose or defective fan belt.

Check belt tension. Replace belt if necessary.

Charging system indicator glows with engine running

Low engine speed.

Increase speed.

Defective battery.

Check electrolyte level and specific gravity.

Defective alternator.

See your John Deere dealer.

Slipping fan belt.

Check belt tension. Replace belt if necessary.

Starter inoperative

Gear shift lever not in PARK.

Move lever to PARK.

PowrReverserâ„¢ Transmission: EH directional reverser lever in forward or reverse.

Move lever to NEUTRAL.

Mechanical PTO lever engaged.

Disengage PTO.

Low battery output.

See your John Deere dealer.

Blown fuse.

Replace fuse.

Starter cranks slowly

Low battery output.

Check electrolyte level and specific gravity.

Crankcase oil too heavy.

Use proper viscosity oil.

Loose or corroded connections.

Clean and tighten loose connections.

Light system does not function; rest of electrical system functions

Blown fuse.

Replace fuse.

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Symptom Problem Solution

Entire electrical system does not function

Faulty battery connections.

Clean and tighten connections.

Sulfated or worn-out battery.

Check electrolyte level and specific gravity.

Blown fuse.

Replace fuse.

Relay(s) sticking or nonfunctional; repeated failures

Diode to protect circuit from arcing has failed.

See your John Deere dealer.

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