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What is Mercury Outboard 6198439

The Mercury outboard engine with serial number 6198439 is a mid-range horsepower motor, commonly used for various boating activities, including fishing and recreational purposes.


Key Specifications:

  • Engine Type: This model is likely a two-stroke or four-stroke engine, depending on its production year. Mercury transitioned heavily to four-stroke engines for better fuel efficiency and environmental performance.
  • Fuel System: Equipped with either a carbureted or Electronic Fuel Injection (EFI) system, designed to deliver smooth power and enhance fuel economy.
  • Cooling System: Utilizes a water-cooled system to maintain optimal engine temperature during operation.

Maintenance Tips:

  • Regular Oil Changes: Essential for engine longevity; use high-quality marine-grade oil as recommended by Mercury.
  • Propeller Inspection: Regularly check for damage or debris to ensure optimal performance and fuel efficiency.
  • Engine Flushing: After saltwater use, flush the engine with fresh water to prevent corrosion.
  • Fuel System Checks: Inspect fuel lines and filters to avoid contamination and maintain engine performance.
  • Battery Maintenance: Keep the battery charged and terminals clean to prevent electrical issues.

Common Issues and Solutions:

  • Overheating: Often caused by a clogged water intake or malfunctioning water pump; regular inspection of the cooling system is advised.
  • Starting Difficulties: May result from fuel system issues; ensure cleanliness and proper maintenance of fuel components.
  • Power Loss: Could indicate problems with spark plugs or fuel delivery; timely replacement of worn parts is recommended.
  • Excessive Vibration: Often due to a damaged or unbalanced propeller; regular inspection and replacement if necessary can ensure smooth operation.

Value and Support:

Mercury outboards are known for durability and performance. A vast network of authorized dealers and service centers ensures availability of parts and support. When purchasing a used engine, verify service records to ensure reliability.

For detailed specifications and parts identification, consult the Mercury Outboard Serial & Model Number Guide. This resource assists in identifying engine features and compatible parts based on serial numbers.


In summary, the Mercury outboard with serial number 6198439 is a versatile engine suitable for various boating needs. Proper maintenance and care will ensure its optimal performance and longevity.

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