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YANMAR ENGINE
REPAIR & OVERHAUL
SERVICES

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OEM-Trained Engineers
30% Faster
Turnaround Time
vs. OEM
Benchmark
30% Cost Reduction
with technology,
maintaining
reliability until the
next overhaul
Timely
Deployment
(Access to
Multiple
PRs & CDC)
Comprehensive
Support On-site,
Off-site, Remote,
including
Riding Squad
12-Month
Workmanship
Warranty
Access to Specialized
Tools such as Chris
Marine Cylinder Liner
Honing, Valve Seat
Machining Tool
Adherance to
OEM Standards
Detailed
Work Completion
Report
View Reports
We are an independent Yanmar engine repair services provider dedicated to elevating the reliability of your engines through our expert repair and overhaul solutions. Our dedicated team consists of more than 27 marine experts who specialize in Yanmar engines. Their expertise spans various services, including repair, planned overhauls, troubleshooting, and inspections, ensuring that your engine operates at peak performance. When you choose Neptunus, you are partnering with a Yanmar diesel engine repair provider committed to revolutionizing maintenance practices within the industry. We distinguish ourselves by not only reducing costs but also by increasing the reliability of your Yanmar engines. Our turnaround time is 30% faster than the standard overhaul duration, ensuring minimal downtime for your operations.

With extensive experience in servicing both domestic and international locations, we offer diesel engine overhaul solutions at our workshop or on-site. In India, we operate across key ports, including Mumbai, Cochin, Goa, Kolkata, Chennai, Visakhapatnam, and Haldia. Internationally, our services extend across South Asia, the Middle East, Europe, Africa, and beyond. This strategic network ensures that our customers, no matter where they are, can easily access the reliable expertise they require for efficient and timely diesel engine services

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Why choose Neptunus?

3 Decades of
Service Excellence
Engine & Propulsion
End-to-End Solutions
2500+ Sucessfull Projects
Delivered Worldwide
Trusted by 100+
Satisfied Customers
Dedicated Experts to
Address Emergencies

Challenges in Yanmar Engine Repair and Overhaul

  • Technical Expertise to Assess Scope:
Accurately evaluating the extent of marine engine overhaul services required and determining the appropriate scope of work demands technical expertise.
  • Adherence to OEM Guidelines:
Strict adherence to Yanmar’s engine service guidelines is crucial for preserving engine warranties and ensuring optimal performance.
  • Lack of Skilled Manpower:
Finding experienced technicians with specialized knowledge in main engine and auxiliary engine overha services can be a significant challenge.
  • Availability of Genuine Spare Parts:
Ensuring the availability of genuine spare parts for yanmar engines can be problematic, leading to suboptimal performance or compatibility issues.
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Beyond Repair and Overhaul for Your Yanmar Engine

At Neptunus, our Asset Reliability Solution is all about building lasting partnerships with our clients, focusing on long-term strategies rather than just short projects. Our aim is to provide tailored solutions that align with your goals of efficient operations in a sustainable and cost-effective way. We understand the challenges you face with maintenance, which is why we leverage the latest technology to overcome these hurdles.

Our in house, proprietary solution include Diesel Engine Monitoring System system and our in-house comprehensive Oil Quality Management Solution featuring real-time Oil Condition Monitoring , continuous Kidney Loop Filtration system, and all these technologies help our customers in the following ways:

To detect the defects early to prevent unexpected failures.

Helps to know current condition of engine parts like vibration damper, mount , piston rings, fuel pump, injectors, valves and cylinders.

Prolong spare part life by extending lube oil life.

Reduced manual inspections with continuous realtime monitoring.

Lower maintenance costs through timely interventions.

Environmental compliance through optimized resource usage and reduced waste.

If you’re interested in achieving similar success for your business, schedule a “Discovery Call” with our experts to explore how we can assist you.
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Beyond its expertise in Yanmar engine repairs, Neptunus Power is widely recognized for its exceptional Wartsila engine repair services , along with other leading engine brands. Explore the full list of brands we service below:

Other Engine Maintenance and Repair Services

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FAQs

Yes, Yanmar engines can be repaired by us. As an independent Yanmar repair and overhaul service provider with three decades of experience and over 27 skilled engineers, we offer comprehensive repair services for all types of Yanmar engines.
Common causes of Yanmar engine failure include:

Lack of proper maintenance

Fuel system issues

Overheating

Lubrication problems

Wear and tear of components

Contamination in fuel or oil

Signs of a problematic Yanmar engine include:

Unusual noises or vibrations

Decreased performance or power output

Excessive smoke from the exhaust

Increased fuel consumption

Oil leaks or low oil pressure

Engine overheating

To prevent Yanmar engine damage, perform regular preventive maintenance, Conduct routine inspections, change oil and filters as recommended, and ensure proper cooling and lubrication. Also, you can install our ABS and IRS class-certified Engine Condition Monitoring System for early detection of potential issues in your Yanmar engine.
Turnaround time varies depending on the extent of repairs needed. We strive to complete most repairs as quickly as possible, typically within a few days to a couple of weeks. For complex overhauls, it may take longer. We’ll provide a more accurate timeline after initial inspection.
We service all types of Yanmar engines, including:

Yanmar Marine Engines

Yanmar Industrial Engines

Yanmar Generator Engines

The Yanmar engine overhaul process typically involves:

Complete disassembly

Inspection of all components

Cleaning and reconditioning of salvageable parts

Replacement of worn or damaged components

Reassembly with new gaskets and seals

Testing and adjusting to ensure optimal performance

The cost of an overhaul varies depending on the engine model, extent of wear, and required parts. We provide detailed quotes after initial inspection. Factors affecting cost include engine size, age, and condition. Click here, to get in quick quote for your yanmar engine overhaul.
A properly performed overhaul can significantly extend an engine’s life, often adding several thousand operating hours. The exact duration depends on usage patterns and maintenance practices.
General maintenance includes:

Regular oil and filter changes

Fuel system checks and cleaning

Cooling system maintenance

Belt inspections and adjustments

Valve clearance checks

Regular inspections for wear and leaks

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Neptunus Power Plant Services Pvt. Ltd.

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India

Neptunus Main Office

A 554/555, TTC Industrial Area,
MIDC Mahape, Navi Mumbai,
Maharashtra 400710, India.

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Ras Al Khaimah Economic Zone,
RAKEZ Al Mamourah Street,
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91400 Gometz-la-Ville,
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