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MAN Maintenance

Proper maintenance is critical for any engine, and it’s especially pivotal for marine diesel engines. Routine maintenance helps keep engines running smoothly while troubleshooting potentially catastrophic engine failures. When you are in search of expert MAN engine maintenance in Miami, South Florida, or Florida’s Gulf Coast, you can count on our services at Marine Diesel Specialists and Gulf Coast diesel service. With two locations, we’re able to provide authorized service and OEM parts for your engine. Quality MAN maintenance is the key to a reliable engine.

Close-up photo of a boat engine

Factory-Authorized Expertise for MAN Marine Diesel Service 

Our teams at Marine Diesel Specialists and Gulf Coast Diesel Service are factory-trained for expert MAN engine maintenance and service. Both locations are authorized dealers for OEM MAN parts. Our Gulf Coast Diesel Service team carries additional authorized dealership distinction for ZF Transmissions and Kohler Generators, with OEM parts and full system sales. Whether you are searching for MAN engine maintenance in Fort Lauderdale, Miami, Tampa, Punta Gorda, or elsewhere, you can count on our teams at Marine Diesel Specialists and Gulf Coast Diesel Service.

The Right MAN Diesel Service

At Marine Diesel Specialists and Gulf Coast Diesel Service, we offer MAN maintenance schedules tailored to your vessel. There are schedules based on operating hours, chronological intervals, and a combination of the two. These services are trusted for MAN engine maintenance in Tampa, Miami, and everywhere in between. Diesel engine service types include, but are not limited to, the following:

  • M1 Checking
  • M2 Cleaning
  • M3 Changing
  • M4 Changing
  • M5 Checking/Setting
  • M6 Trial Run
  • A1 Changing
  • Cleaning
  • A2 Changing

All of these services are best performed by a MAN-authorized service center. Both of our facilities are MAN-authorized service centers and distributors. We use OEM MAN parts for all services, repairs, and maintenance procedures. With authorized OEM parts and factory-trained teams, our service for marine diesel engines is second to none.

Expert Service for MAN Marine Engines Maintenance

Boat engine

When you’re scheduling your MAN service for your diesel engine, it’s important to work with a team that understands how to service a marine diesel engine. Our team at Marine Diesel Specialists is certified in providing the best support for MAN diesel engines. Whether you’re looking for routine engine maintenance or the more extensive MAN diesel 1000 service, our team can help with expert maintenance for MAN marine diesel engines.

Professional Service for Troubleshooting Marine Engine Problems 

As with smaller engines, proper maintenance can make all the difference in the performance reliability of your marine diesel engine and related systems. At Marine Diesel Specialists and Gulf Coast Diesel Service, we believe that proper MAN engine maintenance is crucial. Proper maintenance from our factory-trained experts can help ensure that your systems in Tampa, Naples, Miami, Fort Lauderdale, and surrounding cities run as efficiently and flawlessly as possible.

In addition to providing maintenance at the recommended intervals, we can also offer troubleshooting to address issues before they progress into major marine engine troubles. Our teams at both Florida coastal locations can handle troubleshooting, maintenance, repowers, repairs, and much more.

Quality Customer Service

Our company was founded on the idea that expert service isn’t enough to be the very best in the marine diesel industry. Quality customer service is just as crucial as technical expertise. Our teams at Marine Diesel Specialists and Gulf Coast Diesel Service focus on top-quality customer service and expert marine engine care. We look forward to assisting with your MAN engine maintenance.

Diesel Engine Checklist & Maintenance Schedule

Service based on operating hours

After … hours of operationM1M2M3M4M5M6
After … hours of operationM1M2M3M4M5M6
20-60 or after commissioningXXX

* Retighten cylinder head bolts

The following work is necessary at chronological intervals regardless of hours clocked:
2 YearsXX
4 yearsXX

Service Types

Boat diesel engine

M1 Checking
  • Engine exterior for loss of oil and coolant *1)
  • Coolant level
  • Concentration of antifreeze / anti-corrosion agents
  • Engine oil level/gearbox oil level *1)
  • Engine alarms
  • Functioning of instruments *1)
  • Coolant hoses for leaks
  • Fuel lines for leaks
  • V-belt tension, retightening, if necessary, V-belts
  • Condition of impeller
  • Water hose clamps, pipe connections and bolts for security, retightening, if necessary
  • Alignment of the shaft system (In the event of abnormal vibrations, since the elastic engine mounts may have settled.)
M2 Cleaning
  • Fuel pre-filter
  • Draining water from the auxiliary fuel filter
M3 Changing
  • Fuel filter cartridges *3)
M4 Changing
  • Engine oil
  • Engine oil filter cartridge
  • Filter element of crankcase breather
  • Air filter
M5 Checking / Setting
  • Valve clearance
M6 Trial Run
  • Engine speed test with the boat under full load *3)
A1 Changing
  • Both valve caps on the expansion tank


  • Intercooler/charge-air pipes/turbocharger
  • Heat exchanger (pipe cluster)
A2 Changing
  • Coolant
  • All hoses (e.g. fuel supply and return lines, gearbox oil cooler)

*1) Daily visual checks should be carried out by the captain

*2) Fuel filters will need changing more frequently if contamination is present in the fuel system

*3) Full load = Water and fuel tanks are filled, boat equipment complete, including dinghy

When the respective number of operating hours has been reached, the maintenance work M1 to M6 is to be carried out by a MAN-authorized service center.

Jobs A1 and A2 must be performed, at the intervals listed above, regardless of the operating hours.

Connect With Marine Diesel Specialists!

Marine Diesel Specialists is an authorized MAN dealer dedicated to providing the best sales and service on land. Our experts highly recommend learning the importance of MAN maintenance. We sell and repair a full line of marine products from the top brands, including engines, transmissions, and generators. Even if you need other services aside from MAN diesel 1000-hour service, we can help. When you need the best marine specialists in Florida, contact our team online today to learn more about our services for marine diesel engines!

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