Engine Start with a Slave Battery

LX1057072-UN-15JUL13

CAUTION: It is permissible to start a tractor with a slave battery only if that tractor is equipped with jump-start connections authorized by John Deere™. If a tractor is not equipped with connections for jump-starting with a slave battery, e.g. it has a low-profile open operator's station, then the discharged or defective battery must be replaced with a battery that is sufficiently charged. Have this work done by an authorized dealer.

CAUTION: Danger of injury, danger of explosion! Take safety precautions, see Handling Batteries Safely in Section 05.

CAUTION: Be sure polarity is correct before making connections.

CONNECTING: Connect positive terminal (+) first and then negative terminal (—)! DISCONNECTING: Disconnect the negative terminal (—) first and then the positive terminal (+)! Reversed polarity will damage the electrical system.

IMPORTANT: Cables used for jump-starting must be connected only to the (+) and (—) terminals provided for this purpose.

For jump-starting, use cables that cannot be incorrectly connected (to avoid reversed polarity) and have an approx. 70 mm² cross-section; in addition, the terminals must be insulated.

IMPORTANT: If the engine is to be started using a slave battery or run for a short time without battery, do not raise engine speed above 1000 rpm. Furthermore, use additional current (lights) while engine is running.

IMPORTANT: With battery disconnected, insulate the positive battery cable (+) properly to protect the alternator from damage. See also Important Instructions Regarding Alternator in Section 85.

Most tractors are equipped with connections to allow jump-starting by an additional 12-volt battery.¹

To jump-start, lift up cover (A), and connect positive terminals (+) before connecting negative terminals (—).

When work is finished, first disconnect negative terminal (—) and then positive terminal (+). Close cover (A) again.