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Mercury 300 XS OptiMax User Manual

Mercury 300 XS OptiMax
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TROUBLESHOOTING
96 eng
d. Fuel line is kinked or pinched.
e. Injector plugged.
Threaded connection of an air hose is loose.
Fuel pump failure.
Ignition system component failure.
Performance Loss
POSSIBLE CAUSES
Throttle not fully open.
Damaged propeller or improper propeller size.
Boat overloaded or load improperly distributed.
Excessive water in bilge.
Boat bottom is dirty or damaged.
Warning Horn Activates (With Power Loss)
POSSIBLE CAUSES
Intermittent horn sound:
The oil level in the engine‑mounted oil reservoir tank is low. Refill the
reservoir tank and the remote oil tank. Refer to Fuel and Oil for
details.
Battery voltage is out of limits.
Throttle position sensor failure.
Continuous horn sound:
The oil level in the engine‑mounted oil reservoir tank is critically low.
Refill the reservoir tank and the remote oil tank. Refer to Fuel and Oil
for details.
The oil pump has failed, halting the oil supply to the engine.
High engine temperature or low block water pressure.
Cooling system clogged.
Incorrect transom height (water pickups not getting adequate water
supply).
Warning Horn Activates (No Power Loss)
POSSIBLE CAUSES
Warning horn activates on start up. This is normal operation.
Water is detected in the water‑separating fuel filter. Refer to Maintenance
for procedures on removing water from the filter.

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Mercury 300 XS OptiMax Specifications

General IconGeneral
BrandMercury
Model300 XS OptiMax
CategoryOutboard Motor
LanguageEnglish

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