Engine Runs Erratically; Performance Loss; Battery Will Not Hold Charge - Mercury 60 FourStroke EFI Formula Race Manual

Engine Runs Erratically

POSSIBLE CAUSES
• Guardian System activated. Refer to Features & Controls -
Warning System.
• Spark plugs fouled or defective. Refer to Maintenance section.
• Incorrect setup and adjustments.
• Fuel is being restricted to the engine.
a. Engine fuel filter is obstructed. Refer to Maintenance
section.
b. Fuel tank filter obstructed.
c. Stuck anti‑siphon valve located on permanently built‑in
type fuel tanks.
d. Fuel line is kinked or pinched.
• Fuel pump failure.
• Ignition system component failure.
• Fuel injection component failure (EFI Models).

Performance Loss

POSSIBLE CAUSES
• Engine Guardian System activated. Refer to Features &
Controls - Warning System.
• Throttle not fully open.
• Damaged or improper size propeller.
• 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.
TROUBLESHOOTING
70