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Mercury 300R HD CMS Mechanical User Manual

Mercury 300R HD CMS Mechanical
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Ignition system component failure.
Performance Loss
POSSIBLE CAUSES
Overheating ‑ Warning horn not working.
Low oil pressure. Check oil level.
Throttle not opening fully.
Damaged propeller or improper propeller size.
Incorrect engine timing, adjustment, 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.
Open circuit in the alternator output wire (fused link).
TROUBLESHOOTING
84 eng

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Mercury 300R HD CMS Mechanical Specifications

General IconGeneral
BrandMercury
Model300R HD CMS Mechanical
CategoryOutboard Motor
LanguageEnglish

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