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 alternator/fan belt

Replace belt

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 alternator/fan belt

Replace belt

Starter inoperative

Shift lever or power reverse lever in gear

Move shift lever or power reverse lever to neutral

PTO lever in engaged position

Move PTO lever to disengaged position

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 battery connection

Light system does not function; rest of electrical system functions

Blown fuse

Replace fuse

NS43404,000052D -19-23JAN08-1/2


Symptom Problem Solution

Entire electrical system does not function

Fusible link blown

See your John Deere dealer

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

Failed diode(s)

See your John Deere dealer

NS43404,000052D -19-23JAN08-2/2