Troubleshooting; Starter Motor Will Not Crank The Engine (Electric Start Models); Engine Will Not Start - Mercury 8 User Manual

Starter Motor Will Not Crank The Engine (Electric
Start Models)
POSSIBLE CAUSES
• Blown 20 Amp fuse in the starting circuit. Refer to
Maintenance section.
• Outboard is not shifted to neutral position.
• Weak battery or battery connections are loose or corroded.
• Ignition key switch/start button failure.
• Wiring or electrical connection faulty.
• Starter motor or starter solenoid failure.

Engine Will Not Start

POSSIBLE CAUSES
• Lanyard stop switch not in "RUN" position.
• Battery not fully charged.
• Incorrect starting procedure. Refer to Operation section.
• Old or contaminated fuel.
• Fuel is not reaching the engine.
• Fuel tank is empty.
• Fuel tank vent not open or restricted.
• Fuel line is disconnected or kinked.
• Primer bulb not squeezed.
• Primer bulb check valve is faulty.
• Fuel filter is obstructed. Refer to Maintenance section.
• Fuel pump failure.
• Fuel tank filter obstructed.
• Open 20 amp fuse. Check fuses, refer to Maintenance
section.
• Threaded connection of an air hose is loose.
• Ignition system component failure.
• Spark plugs fouled or defective. Refer to Maintenance
section.

TROUBLESHOOTING

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