Normal Starting Procedure C8.3 Commercial Marine and Ind [...] Page 1-12 Section 1 - Operating Instructions Jump Starting Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last. WARNING CAUTION When using jumper cables to start the engine, make sure to connect the cables in parallel: Positive (+) to positive (+) and negative (-) to negative (-). When using an external electrical source to start the engine, turn the disconnect switch to the OFF position.
Remove the key before attaching the jumper cables. CAUTION To avoid damage to engine parts, do not connect jumper starting or battery charging cable to any fuel system or electronic component.