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Starting with auxiliary batteries

image WARNING! Ventilate well. Batteries can gener- ate oxy-hydrogen, which is very flammable and highly explosive. A short circuit, open flame or spark could cause a violent explosion.


image WARNING! Never mix up the battery cables po- sitions on the battery. Mixing up the battery ter- minals when applying starting assistance can cause a short circuit and sparks, which could cause an explosion and also damage the en- gine’s electrical components.

1. Check that the auxiliary battery’s voltage is the same as the engine’s system voltage.

2. First connect the red (+) jump lead to the dis- charged battery’s positive terminal (+) and then to the auxiliary battery’s positive terminal (+).


3. Then connect the black (-) jump lead to the auxil- iary battery’s negative terminal (-) and to a suit- able ground somewhere away from the dis- charged battery’s negative terminal (-) e.g. to the negative cable on the starter motor.

image WARNING! The black (-) jump lead must under no circumstances come in contact with the positive cable connection on the starter motor.

4. Start the engine and run at high idle for about 10 minutes to charge the batteries.

image WARNING! Working with, or going close to a running engine is a safety risk.

Watch out for rotating components and hot sur- faces.

Do not touch the connections during the starting attempt.

Sparking hazard.

Do not lean over any of the batteries.

5. Turn off engine.

Remove the jump leads in reverse order to installation. One lead at a time!

Group 23 EMS 2 Function check


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