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Outboard Motor Lower Unit Servicing for Yachts: Essential Maintenance for Peak Performance
The lower unit of an outboard motor is a critical component responsible for transmitting power from the engine to the propeller, ensuring smooth operation and propulsion. Regular servicing of the lower unit is essential to maintain performance, prevent damage, and extend the lifespan of your motor. At YachtService.me, based in Tivat, we provide expert outboard motor lower unit servicing to keep your yacht’s propulsion system in excellent condition, ensuring safe and reliable operation during every journey.

What Is an Outboard Motor Lower Unit?
The lower unit, also known as the gearcase, is the bottom section of an outboard motor. It houses essential components such as:
  • Gears
  • Bearings
  • Drive shaft
  • Propeller shaft
  • Water pump

Proper maintenance of these components ensures efficient propulsion and prevents costly damage.
Why Regular Lower Unit Servicing Is Important
1. Protect Against Corrosion
The lower unit operates in a harsh marine environment, making it susceptible to corrosion. Regular servicing prevents and mitigates corrosion damage.
2. Prevent Gear Damage
Routine inspections and lubrication keep gears functioning smoothly, avoiding costly repairs.
3. Ensure Proper Cooling
The water pump in the lower unit plays a key role in engine cooling. Servicing ensures it operates effectively, preventing engine overheating.
4. Maintain Propeller Performance
Servicing ensures the propeller shaft and seals are in good condition, preventing water intrusion and maintaining thrust efficiency.
5. Extend Lifespan
  • Proactive maintenance reduces wear and tear, extending the life of your outboard motor.
Comprehensive Outboard Motor Lower Unit Servicing by YachtService.me
At YachtService.me, we offer a complete range of lower unit servicing solutions to keep your outboard motor in top condition:
1. Gearcase Inspection
  • Inspecting the gearcase for signs of damage, corrosion, or wear.
  • Checking seals for cracks or deterioration that may cause leaks.
2. Gear Oil Change
  • Draining and replacing gear oil to remove contaminants and ensure smooth operation.
  • Inspecting oil for signs of water intrusion or metal shavings.
3. Water Pump Servicing
  • Inspecting and replacing water pump impellers and gaskets to maintain effective cooling.
  • Ensuring the pump housing is clean and free of debris.
4. Seal Replacement
  • Replacing worn or damaged seals to prevent water intrusion into the gearcase.
5. Propeller Shaft Maintenance
  • Inspecting the propeller shaft for damage or misalignment.
  • Cleaning and greasing the shaft to ensure smooth rotation and easy removal.
6. Corrosion Protection
  • Applying anti-corrosion treatments to the lower unit to protect against marine elements.
7. Performance Testing
  • Conducting post-service tests to ensure all components function correctly.

Common Problems Solved by YachtService.me Technicians
a. Water Intrusion in the Gearcase
  • Problem: Damaged seals or cracks in the gearcase allow water to enter, contaminating gear oil.
  • Solution: Replacing seals, repairing the gearcase, and changing the oil to restore proper function.
b. Overheating Issues
  • Problem: A faulty water pump impeller fails to circulate cooling water, causing the engine to overheat.
  • Solution: Replacing the impeller and servicing the water pump for effective cooling.
c. Propeller Shaft Damage
  • Problem: Bent or damaged propeller shafts reduce efficiency and may cause vibrations.
  • Solution: Inspecting and repairing or replacing the propeller shaft for smooth operation.
d. Gear Wear or Failure
  • Problem: Insufficient lubrication or contaminants in the oil lead to gear wear or damage.
  • Solution: Replacing damaged gears and ensuring proper lubrication during service.
e. Corrosion and Rust
  • Problem: Exposure to saltwater accelerates corrosion in the lower unit.
  • Solution: Cleaning, applying anti-corrosion treatments, and using marine-grade lubricants.
f. Loss of Thrust
  • Problem: A damaged propeller or faulty seals reduce the motor’s thrust efficiency.
  • Solution: Servicing the propeller and lower unit to restore optimal performance.

Why Choose YachtService.me for Lower Unit Servicing?
  • Expert Technicians: Skilled in diagnosing and servicing outboard motor lower units of all major brands.
  • Marine-Grade Tools and Materials: Using specialized equipment and high-quality components.
  • Prompt and Reliable Service: Located in Tivat, we ensure quick turnaround times to get you back on the water.
  • Preventive Care Focus: Proactively addressing issues to avoid costly repairs or replacements.
  • Tailored Solutions: Adapting our services to meet the specific requirements of your yacht.

Contact YachtService.me for Professional Outboard Motor Lower Unit Servicing
Keep your yacht’s outboard motor running smoothly with expert lower unit servicing from YachtService.me. Our experienced technicians provide thorough maintenance, ensuring reliable performance and protecting your investment. Contact us today to schedule your service and experience worry-free boating on your next adventure!
At YachtService.me, based in Tivat, we offer comprehensive motor boat survey services to ensure your vessel is in top condition before purchase, sale, or regular use. A professional survey is essential for assessing the condition and value of a motor boat, identifying potential issues, and ensuring safety on the water.
Wiper motor repair is crucial for yachts and other marine vessels that often face harsh conditions at sea. A functional wiper motor ensures visibility during rain, sea spray, and other challenging weather conditions, which can be critical for safe navigation. At YachtService.me, our technicians specialize in comprehensive wiper motor repair services tailored for marine environments, helping yacht owners maintain reliable visibility systems.
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Contact us
Telegram
Skype
Mail
Phone
WhatsApp
Viber