Performance Loss; Battery Will Not Hold Charge - Mercury Jet 40 Manual

• Cavitation of the impeller due to rough water or obstruction in the boat hull.
• Blockage of the water intake.

Performance Loss

POSSIBLE CAUSES
• Throttle not fully open.
• Damaged impeller.
• Incorrect engine timing, adjustments, or setup.
• Boat overloaded or load improperly distributed.
• Excessive water in bilge.
• Boat bottom is dirty or damaged.

Battery Will Not Hold Charge

POSSIBLE CAUSES
• Battery connections are loose or corroded.
• Low electrolyte level in battery.
• Worn out or inefficient battery.
• Excessive use of electrical accessories.
• Defective rectifier, alternator, or voltage regulator.
TROUBLESHOOTING
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