Uday Purohit
Nov 17, 2025
Neptunus Power Plant Services is an independent service provider supporting ship owners and operators of Yanmar engines with compatible spare parts, precision repair, and fully customized overhaul solutions. We are not affiliated with the Yanmar Group, Japan. Yanmar diesel engine repair has been one of our core capabilities for over three decades, backed by a specialized team dedicated exclusively to Yanmar marine engines.
As an experienced service partner, we focus on improving the performance, reliability, and operating life of Yanmar engines by troubleshooting, diagnostics, complete repairs, scheduled overhauls, and detailed inspections. Our team follows OEM-compliant procedures and uses high-quality compatible Yanmar engine parts to ensure long-lasting, dependable repairs. With advanced diagnostic tools and predictive repair techniques, we help ship operators minimize operational risks and avoid costly breakdowns.
Choosing Neptunus means partnering with a service provider committed to redefining Yanmar diesel engine maintenance. We consistently reduce repair costs, enhance engine reliability, and deliver results with turnaround times up to 30% faster than the industry average. Our services are available both at our workshops and onboard vessels. In India, we operate across major ports including Mumbai, Cochin, Goa, Kolkata, Chennai, Visakhapatnam, and Haldia. Internationally, we support customers across South Asia, the Middle East, Europe, Africa, and more ensuring global access to expert Yanmar marine engine service and support.Send in your Enquiry for a Quote
| Yanmar 6LY2A-STP | Yanmar 6EY26 | Yanmar 4KDL | Yanmar 6HAL2 | Yanmar 6AYM | Yanmar 8EY26 |
Send in your Enquiry for a Quote
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:
Lack of proper maintenance
Fuel system issues
Overheating
Lubrication problems
Wear and tear of components
Contamination in fuel or oil
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
Yanmar Marine Engines
Yanmar Industrial Engines
Yanmar Generator Engines
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
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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