Troubleshooting; Starter Motor Will Not Crank The Engine; Engine Will Not Start; Engine Runs Erratically - Mercury 200 Sport-Jet Operation & Maintenance Manual

Starter Motor Will Not Crank the Engine

POSSIBLE CAUSES
• 20‑amp fuse in the starting circuit is open. Refer to Maintenance.
• Jet drive is not shifted into the neutral position.
• Battery is weak or the battery connections are loose or corroded.
• Ignition key switch failed.
• Wiring or an electrical connection is faulty.
• Starter motor solenoid or the slave solenoid failed.

Engine Will Not Start

POSSIBLE CAUSES
• Lanyard stop switch is not in the "RUN" position.
• Battery is not fully charged.
• Incorrect starting procedure was used. Refer to Operation.
• Fuel is old or contaminated.
• Fuel is not reaching the engine.
• Fuel tank is empty.
• Fuel tank vent is not open or is restricted.
• Fuel line is disconnected or kinked.
• Fuel filter is obstructed. Refer to Maintenance.
• Fuel pump failed.
• Fuel tank filter is obstructed.
• 20‑amp fuse is open. Check the fuses. Refer to Maintenance.
• Threaded connection of an air hose is loose.
• Ignition system component failed.
•
Spark plugs are fouled or defective. Refer to Maintenance.

Engine Runs Erratically

POSSIBLE CAUSES
•
Spark plugs are fouled or defective. Refer to Maintenance.
• System setup or adjustments were done incorrectly.
• Fuel to the engine is being restricted.
• Engine fuel filter is obstructed. Refer to Maintenance.
• Fuel tank filter is obstructed.
• Antisiphon valve on built‑in fuel tank is stuck.
• Fuel line is kinked or pinched.
• Injector is plugged.

TROUBLESHOOTING

66
eng