Marine engine room with twin generators — ACCUMAR Marine Services Fort Myers FL
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Marine Generator Sales, Repair & Rebuild

New-generator selection, diagnostics, repair, rebuild evaluation, and replacement. Equipment coverage is confirmed from the brand, model, condition, parts path, access, and approved scope.

34+ Generators 6 Premium Brands Repair & Rebuild Verified Google Reviews

Our Generator Services

From diagnostics and maintenance to repair planning and installation

New Generator Sales

Generator selection based on documented vessel load, voltage, frequency, space, cooling, exhaust, fuel, and installation requirements. Exact equipment and availability are confirmed before quoting.

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Generator Repair

Diagnostics and repair planning for listed and other compatible marine generator equipment, including fuel, cooling, electrical, exhaust, and control systems. Scope depends on the installed model, findings, parts, and tooling.

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Generator Rebuild

Generator-end and engine rebuild scope is based on measurements, condition, parts support, access, and approval. Work may include electrical components, pistons, rings, bearings, gaskets, or injectors where applicable.

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Generator Replacement

When repair isn't cost-effective, we handle complete generator replacement including removal, new unit installation, exhaust, fuel, and electrical.

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Annual Maintenance

Comprehensive annual service: oil & filter change, fuel filter, impeller inspection, belt check, coolant, exhaust inspection, and load testing.

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Scheduled Service Review

Send the generator make, model, serial, alarms, symptoms, vessel location, access, and photos for business-hour review. Availability is confirmed case by case.

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Authorized Service for the World's Best Marine Generators

CumminsCummins OnanKohlerNorthern LightsFischer PandaPhasor MarineNext Generation Power Engineering

Cummins Onan

The Industry Standard in Marine Power

  • Largest marine generator manufacturer
  • 5-29 kW range covers all vessels
  • Extensive dealer & parts network
  • QD series with sound shields

Best for: All vessel types — most popular choice

Kohler

Reliable Power, Proven Performance

  • 5-20+ kW diesel range
  • Sound shield options
  • Strong dealer network
  • Competitive pricing

Best for: Cost-conscious buyers seeking reliability

Westerbeke

Marine-Proven Diesel & Gas Generators

  • Both diesel & gasoline models
  • Low RPM operation
  • Extended service life
  • Low CO gasoline models

Best for: Gas-powered boats & budget-friendly options

Northern Lights

Built for the Harshest Marine Environments

  • 1800 RPM long-life design
  • Premium build quality
  • 6-38 kW range
  • Commercial-grade durability

Best for: Cruisers, trawlers & commercial vessels

Fischer Panda

The World's Quietest Marine Generators

  • Variable speed technology
  • Super-silent operation
  • 100% freshwater cooled
  • Compact & lightweight

Best for: Sailboats & noise-sensitive installations

Phasor Marine

Compact Power for Tight Spaces

  • 3.5-8 kW compact range
  • Competitive pricing
  • 1800 RPM operation
  • Ignition protected models

Best for: Small boats & space-constrained installations

Generator Catalog

Showing 34 of 34 generators

Cummins OnanDiesel
5 kW

QD 5 kW

Model: MDKBH

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Digital display ready

Best for: Small cruisers & sailboats

Citimarine / Bosch Marine
Cummins OnanDiesel
7.5 kW

QD 7.5 kW

Model: MDKBJ

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Low vibration

Best for: Mid-size cruisers 30-40ft

Citimarine / Bosch Marine
Cummins OnanDiesel
9 kW

QD 9 kW

Model: MDKBL

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • High capacity

Best for: Cruisers & sportfish 35-45ft

Citimarine / Bosch Marine
Cummins OnanDiesel
9 kW

QD 9 kW Space Saver

Model: MDKDK

Call for Best Price

  • Diesel
  • 60 Hz
  • Compact design
  • Tight engine rooms

Best for: Space-constrained installations

Citimarine / Bosch Marine
Cummins OnanDiesel
11.5 kW

QD 11.5 kW

Model: MDKDM

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Multi-AC capable

Best for: Large cruisers 40-50ft

Citimarine / Bosch Marine
Cummins OnanDiesel
13.5 kW

QD 13.5 kW

Model: MDKDN

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Heavy duty

Best for: Sportfish & motor yachts 45-55ft

Citimarine / Bosch Marine
Cummins OnanDiesel
17 kW

QD 17 kW

Model: MDKDP

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Full vessel power

Best for: Motor yachts 50-65ft

Citimarine / Bosch Marine
Cummins OnanDiesel
21.5 kW

QD 21.5 kW

Model: MDKDR

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • High output

Best for: Large yachts 60-80ft

Citimarine / Bosch Marine
Cummins OnanDiesel
29 kW

QD 29 kW

Model: MDKDS

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Maximum power

Best for: Mega yachts & commercial vessels

Citimarine / Bosch Marine
KohlerDiesel
5 kW

5EKD

Model: 5EKD

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield option
  • 12V start

Best for: Small cruisers & sailboats

Citimarine / West Marine
KohlerDiesel
7.3 kW

7.3EKD

Model: 7.3EKD

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield option
  • Compact design

Best for: Mid-size cruisers 30-40ft

Citimarine / West Marine
KohlerDiesel
9 kW

9EKD

Model: 9EKD

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield option
  • Low RPM

Best for: Cruisers & sportfish 35-45ft

Citimarine / West Marine
KohlerDiesel
12 kW

12EKD

Model: 12EKD

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Multi-AC capable

Best for: Large cruisers 40-55ft

Citimarine / West Marine
KohlerDiesel
14 kW

14EKD

Model: 14EKD

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • Heavy duty

Best for: Sportfish & motor yachts 45-60ft

Citimarine / West Marine
KohlerDiesel
20 kW

20EKD

Model: 20EKD

Call for Best Price

  • Diesel
  • 60 Hz
  • Sound shield
  • High output

Best for: Motor yachts & large sportfish

Citimarine / West Marine
WesterbekeGasoline
5 kW

5.0 MCGA

Model: 5.0MCGA

Call for Best Price

  • Gasoline
  • 60 Hz
  • Low CO
  • Compact

Best for: Gas-powered boats under 30ft

Citimarine / West Marine
WesterbekeDiesel
5 kW

5.0 BCD

Model: 5.0BCD

Call for Best Price

  • Diesel
  • 60 Hz
  • Low RPM
  • Quiet operation

Best for: Diesel sailboats & small cruisers

Citimarine / West Marine
WesterbekeDiesel
8 kW

8.0 BCD

Model: 8.0BCD

Call for Best Price

  • Diesel
  • 60 Hz
  • Low RPM
  • Long life design

Best for: Mid-size cruisers & trawlers

Citimarine / West Marine
WesterbekeGasoline
10 kW

10.0 SBEG

Model: 10.0SBEG

Call for Best Price

  • Gasoline
  • 60 Hz
  • Side mount
  • Low CO

Best for: Gas-powered cruisers 30-40ft

Citimarine / West Marine
WesterbekeGasoline
12.5 kW

12.5 SBEG

Model: 12.5SBEG

Call for Best Price

  • Gasoline
  • 60 Hz
  • Side mount
  • Multi-AC capable

Best for: Gas-powered cruisers 35-45ft

Citimarine / West Marine
WesterbekeGasoline
14 kW

14.0 SBEG

Model: 14.0SBEG

Call for Best Price

  • Gasoline
  • 60 Hz
  • Side mount
  • High output

Best for: Large gas-powered vessels

Citimarine / West Marine
Northern LightsDiesel
6 kW

M673L3G 6 kW

Model: M673L3G

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Long life design

Best for: Cruising sailboats & trawlers

Trans Atlantic Diesels
Northern LightsDiesel
8 kW

M773LW3 8 kW

Model: M773LW3

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Marine proven

Best for: Mid-size cruisers 30-40ft

Trans Atlantic Diesels
Northern LightsDiesel
16 kW

M844W3 16 kW

Model: M844W3

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Heavy duty

Best for: Motor yachts & commercial vessels

Trans Atlantic Diesels
Northern LightsDiesel
38 kW

M944T 38 kW

Model: M944T

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Maximum power

Best for: Large yachts & commercial vessels

Trans Atlantic Diesels
Fischer PandaVariable Speed
5 kW

5000i Neo PMS

Model: 5000i-Neo

Call for Best Price

  • Variable speed
  • Super silent
  • 100% freshwater cooled
  • Compact

Best for: Quiet-critical sailboats & cruisers

Fischer Panda Dealer
Fischer PandaVariable Speed
8 kW

8000i Neo PMS

Model: 8000i-Neo

Call for Best Price

  • Variable speed
  • Super silent
  • 100% freshwater cooled
  • Fuel efficient

Best for: Mid-size quiet installations

Fischer Panda Dealer
Fischer PandaVariable Speed
15 kW

15000i Neo PMS

Model: 15000i-Neo

Call for Best Price

  • Variable speed
  • Super silent
  • 100% freshwater cooled
  • High output

Best for: Large yachts requiring silence

Fischer Panda Dealer
Fischer PandaDC Generator
3.2 kW

AGT DC4000 24V

Model: AGT-DC4000

Call for Best Price

  • DC output 24V
  • Variable speed
  • Battery charging
  • Ultra compact

Best for: DC battery charging systems

Fischer Panda Dealer
Phasor MarineDiesel
3.5 kW

LP1 3.5 kW

Model: LP1-3.5kW

Call for Best Price

  • Diesel
  • 60 Hz
  • Compact
  • Low RPM

Best for: Small sailboats & pocket cruisers

Citimarine / Phasor Dealer
Phasor MarineDiesel
4.5 kW

K2-4.5 kW

Model: K2-4.5pmg

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Ignition protected

Best for: Sailboats & small cruisers

Citimarine / Phasor Dealer
Phasor MarineDiesel
6.5 kW

K3-6.5 kW Compact

Model: K3-6.5KW

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Compact series

Best for: Space-constrained installations

Citimarine / Phasor Dealer
Phasor MarineDiesel
7 kW

K3-7.0 kW

Model: K3-7.0kW

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Standard series

Best for: Mid-size cruisers & sailboats

Citimarine / Phasor Dealer
Phasor MarineDiesel
8 kW

K3-8.0 kW Compact

Model: K3-8.0KW

Call for Best Price

  • Diesel
  • 60 Hz
  • 1800 RPM
  • Compact series

Best for: Cruisers needing compact power

Citimarine / Phasor Dealer

Brand Comparison at a Glance

Quick overview to help you choose the right generator brand

FeatureCummins OnanKohlerWesterbekeNorthern LightsFischer Panda
Best ForAll vesselsBudget-friendlyGas boatsCruisers/trawlersQuiet installs
Fuel TypeDieselDieselDiesel & GasDieselDiesel (variable)
Range5-29 kW5-20 kW5-20 kW6-38 kW3.2-15+ kW
Entry PriceCallCallCallCallCall
Noise Level★★★★☆★★★★☆★★★★☆★★★★☆★★★★★
Dealer Network★★★★★★★★★☆★★★★☆★★★☆☆★★★☆☆
Parts Availability★★★★★★★★★☆★★★★☆★★★★☆★★★☆☆
Value for Money★★★★☆★★★★★★★★★★★★★★☆★★★☆☆

Verified Customer Feedback

Read genuine Google reviews supplied by customers across ACCUMAR's marine service work.

Frequently Asked Questions

What size marine generator do I need for my boat?
Generator sizing depends on a documented electrical load profile plus voltage, frequency, starting loads, space, ventilation, cooling, exhaust, fuel, sound, and installation requirements. ACCUMAR can review the vessel and prepare a model-specific recommendation and quote. Call 239-323-9600.
How much does it cost to install a marine generator?
Marine generator installation cost depends on vessel access, whether the work is a replacement or new installation, electrical integration, mounting, fuel, cooling, exhaust, controls, commissioning, and the selected equipment. ACCUMAR provides a written scope and quote after reviewing the project requirements.
Should I repair or replace my marine generator?
Repair, rebuild, or replacement should be decided from model support, operating hours, load-test and electrical findings, engine and generator-end condition, corrosion, cooling and exhaust condition, parts, access, expected use, and comparative quotes. ACCUMAR documents the findings before recommending an approved scope.
What brands of marine generators do you service?
ACCUMAR evaluates Cummins Onan, Kohler, Westerbeke, Northern Lights, Fischer Panda, Phasor Marine, and other compatible diesel or gasoline generator equipment. Service scope for each unit depends on the model, condition, documentation, parts support, access, and required tooling; older or discontinued models are assessed individually.
How often should a marine generator be serviced?
Marine generators should be serviced every 250-500 hours or annually, whichever comes first. Service includes oil and filter change, fuel filter replacement, raw water impeller inspection, belt inspection, coolant check, and exhaust system inspection. In Southwest Florida's salt air environment, we recommend more frequent inspections of cooling systems and exhaust components. Call for best pricing on annual service packages.
What is a marine generator rebuild?
A generator rebuild may involve disassembling the generator end and replacing approved worn components such as bearings, brushes, voltage regulators, stator windings, or rotor components. Engine work may include pistons, rings, bearings, gaskets, or injectors where supported. Measurements, parts support, labor, warranty terms, and a replacement comparison determine whether rebuilding is appropriate.
Why won't my marine generator start?
Common causes include: dead or weak starting battery, fuel delivery issues (clogged filter, air in fuel lines, bad lift pump), glow plug failure (diesel), exhaust back-pressure from blocked muffler or elbow, low oil pressure safety shutdown, overheating safety shutdown, or control board failure. ACCUMAR Marine offers comprehensive generator diagnostics. Call 239-323-9600.
Can you convert my boat from shore power to generator power?
Yes, ACCUMAR Marine designs and installs complete generator systems for boats that currently rely solely on shore power. This includes generator selection and sizing, mounting and vibration isolation, exhaust system design and installation, fuel system plumbing, electrical integration with your existing panel, and automatic transfer switch installation. This is a popular upgrade for boats transitioning from coastal cruising to extended voyaging.

Diesel: Mystery to Mastery

Our team breaks down diesel engine fundamentals — from fuel systems to troubleshooting — in this quick educational guide.

Need Generator Service or a New Installation?

Send the generator brand, model, symptoms, fault history, vessel location, access details, and photos. We will confirm diagnostic, repair, rebuild, replacement, parts, and quote options from the installed equipment.

Plan Generator Condition and Service Checks

Scheduled oil and filter service, cooling-system inspection, and load testing can support condition-based maintenance decisions.

Captain's Maintenance Bulletin

Seasonal checklists, diagnostic tips, and marine AC insights from decades of experience in the field. No fluff — just what works.

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© 2026 ACCUMAR Marine Service. All rights reserved.

Fort Myers, FL | 239-323-9600 | Professional Marine Generator Service Since 2000

Pricing & Payment FAQ

Recent Jobs

ACCUMAR job records and photographs. Job dates, reported faults, findings, repairs and verification are published only when supplied by Roland. Dates are not supplied for these records; this is not a chronological job list.

Actual ACCUMAR service photographs. Each caption retains its own recorded location; these are not all one assignment. No repair outcome is inferred. Select a photograph to enlarge it. Use the arrows or swipe to move through the gallery.

Close view of MTU-labeled engine covers aboard the Pershing 80. Naples, Florida.

Related ACCUMAR service

MTU 16V diesel service showing filters, pipes and an engine-mounted heat exchanger. Naples, Florida.

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MTU 16V diesel service with closely arranged cooling and filtration components. Naples, Florida.

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Cummins Onan generator service aboard the Pershing 80 in Naples, identified by ACCUMAR’s owner. The image shows the generator and surrounding engine-room equipment. Naples, Florida.

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Engine room aboard a 78-foot Donzi, with twin marine engines, exhaust piping, hoses and adjacent service equipment.

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New fuel filter installed in the middle of the equipment space, with battery chargers to the right.

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From the Shop
View ACCUMAR job photos

Typical price ranges

Quoted after an inspection. Labor starts at $160/hr.

Diagnostic visit

Most jobs run $200–$400, parts included, before tax. Every boat is different, and we confirm the price after we look at it. Labor starts at $160/hr with a 1-hour minimum.

Our AI phone receptionist answers calls 24/7. Service is by appointment, not 24/7, and there is no emergency service. Typical lead time: 3–4 weeks.

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Frequently Asked Questions

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