John Deere 4045 / 6068 — Using a Booster Battery or Charger
Operation · Electrical system
For the John Deere 4045 / 6068, from the John Deere owner's manual.
Applies to: John Deere 4045, John Deere 6068
Before you start
- Gas given off by battery is explosive. Keep sparks and flames away. Always connect NEGATIVE (-) cable last and disconnect it first.
Procedure
- Connect booster battery or batteries to produce required system voltage.
- Connect one end of jumper cable to POSITIVE (+) post of booster battery.
- Connect other end to POSITIVE (+) post of battery connected to starter.
- Connect one end of the other cable to NEGATIVE (-) post of booster battery.
- Make last connection of NEGATIVE (-) cable to a good ground on engine frame away from battery.
- Start engine; disconnect jumper cables immediately after engine starts, NEGATIVE (-) first.
Tools required
- Heavy duty jumper cables Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: John Deere 4045 →, John Deere 6068 →
Source: John Deere owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.