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Engine Runs Erratically
POSSIBLE CAUSES
•
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 antisiphon valve on built‑in fuel tank.
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 impeller.
•
Boat overloaded or load improperly distributed.
•
Excessive water in bilge.
•
Boat bottom is dirty or damaged.
Engine Overspeed (Excessive RPM)
POSSIBLE CAUSES
•
Outboard mounted too high on the transom.
•
Worn jet pump impeller or liner.
•
Incorrect jet pump impeller clearance adjustment.
•
Tilting the outboard out beyond a vertical position.
•
Cavitation of the impeller due to rough water or obstruction
in the boat hull.
•
Blockage of the water intake.
eng
TROUBLESHOOTING
83
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