Marine Engine Services — From Installation to Overhaul
Buying an engine is only the start. Our factory-certified marine technicians keep your inboard or outboard running at its best — from first installation and rigging through routine maintenance, diagnostics, winter storage, and full repower. Whether you need a planned service or emergency help on the water, we've got you covered across Europe.
Our Services
Everything your vessel needs — under one roof in Nieuwersluis, or on-site at your marina.
Repairs & Overhauls
From powerhead rebuilds and turbocharger replacement to full inboard overhauls. Factory-certified diagnostics, genuine OEM parts, and dyno-tested results.
Explore Repairs →Maintenance & Routine Service
Scheduled oil changes, impeller replacement, valve adjustments, cooling system flushes, and 500h / 1000h / 2000h major services for every brand.
View Service Plans →Winterization & Storage
End-of-season fogging, coolant drainage, fuel stabilisation, battery care, and shrink-wrap storage. Pre-season commissioning gets you back on the water fast.
Winterization Details →Electric & Hybrid Conversions
Torqeedo and ePropulsion electric outboard installations, lithium battery bank design, solar integration, and hybrid diesel-electric system consulting.
Go Electric →Mobile & On-Water Service
Can't bring your boat to us? Our mobile workshop comes to you — within 100 km of Nieuwersluis. Emergency breakdown response and on-water diagnostics available.
Book Mobile Service →Installation & Rigging
New engine installation, transom adaptation, control cable routing, propeller matching, sea-trial tuning, and full documentation for insurance and warranty.
Request Installation Quote →How We Work — The Green Boat Engines Process
Transparent, documented, and factory-aligned — so you know exactly what happens to your engine at every stage.
Diagnose
Visual inspection, electronic scan-tool readout, compression test, and fluid analysis. We identify the root cause, not just the symptom.
Quote
Itemised written estimate with labour hours, parts list, and timeline. No hidden costs. No work starts without your written approval.
Approve
You review the quote, ask questions, and sign off. For major overhauls, we provide photo updates at each teardown milestone.
Execute
Factory-certified technicians perform the work using genuine OEM parts, calibrated tools, and manufacturer service bulletins.
Test & Handover
Dyno run or water test, final QC checklist, digital service record upload, and warranty documentation. You're back on the water.
Every Engine Type, Every Major Brand
Our technicians hold current certifications and factory scan-tool licences for the brands you trust.
🚤 Outboard Motors
Yamaha · Mercury · Honda · Suzuki · Evinrude · Tohatsu · Nissan · Torqeedo · ePropulsion
⚙️ Inboard Diesel
Volvo Penta · Yanmar · Vetus · Perkins · Cummins · Caterpillar · Beta Marine · Nanni · Westerbeke
⛽ Inboard Gasoline
MerCruiser · Volvo Penta · Yanmar · Crusader · PCM · Indmar · Pleasurecraft · PCM
🔌 Marine Generators
Fischer Panda · Onan/Cummins · Kohler · Northern Lights · Mase · Paguro · Westerbeke
🔄 Pumps & Transmissions
ZF · Twin Disc · Velvet Drive · PRM · Hurth · BorgWarner · Jabsco · Johnson Pump
🔋 Electrical Systems
Alternators · Starters · AVR units · Battery chargers · NMEA 2000 networks · Solar controllers
Workshop Capabilities
Our 1,200 m² facility in Nieuwersluis is equipped for everything from a 2.5 HP portable service to a 1,000 HP diesel overhaul.
Water-brake dyno for inboards up to 1,200 HP. Load-bank testing for generators up to 150 kVA.
3,000-litre freshwater test tank for outboard run-in, propeller testing, and lower-unit pressure checks.
YDS, CDS, VODIA, VCM, Diagnostic Link, and proprietary software for all major brands.
Bosch EPS 205 test bench. Common-rail injector coding and calibration for Volvo, Yanmar, and Cummins.
In-house cylinder head resurfacing, valve seat cutting, and custom adapter fabrication.
On-site oil, coolant, and fuel testing with particle-count spectrometry for predictive maintenance.
Oscilloscopes, NMEA 2000 analysers, thermal imaging, and battery load-test stations.
5,000+ SKUs in stock. OEM and genuine replacement parts for same-day dispatch on routine jobs.
Mobile & On-Water Service
Not every engine can come to the workshop. Our mobile fleet brings the expertise to your marina, driveway, or mooring.
We Come to You
Our mobile service vans are fully equipped with scan tools, spare parts, lifting gear, and freshwater flushing equipment. We service within a 100 km radius of Nieuwersluis, covering Amsterdam, Rotterdam, Utrecht, The Hague, and major marinas along the IJsselmeer and North Sea coast.
Emergency breakdown? Call our 24-hour hotline. We aim to reach you within 4 hours for critical failures during the boating season (April–October).
Service Pricing Guide
Transparent starting prices for our most-requested services. Final quotes are always itemised and fixed before work begins.
| Service | Description | From |
|---|---|---|
| Outboard Annual Service | Oil & filter, impeller, spark plugs, gear oil, anodes, full inspection | €195 |
| Inboard Diesel Annual Service | Oil & filter, fuel filter, impeller, belt check, coolant test, valve clearance | €295 |
| Generator Annual Service | Oil & filter, air filter, fuel filter, AVR check, load-bank test | €245 |
| Outboard Winterization | Fogging, coolant drain, fuel stabiliser, battery disconnect, shrink-wrap | €145 |
| Inboard Winterization | Raw-water system flush, coolant drain, fuel treatment, battery care | €195 |
| Pre-Season Commissioning | Recommission fluids, battery test, sea-trial, systems check | €165 |
| Diagnostic & Inspection | Scan-tool readout, compression test, visual inspection, written report | €125 |
| Lower Unit Reseal (Outboard) | Remove, inspect gears, replace all seals, pressure test, refill | €295 |
| Powerhead Rebuild (Outboard) | Strip, hone, new pistons & rings, bearings, gaskets, reassembly, run-in | €1,450 |
| Turbocharger Replacement (Diesel) | Remove & replace turbo, oil-line flush, boost-pressure calibration | €895 |
| Injection Pump Calibration | Remove, bench test, shim adjustment, refit, timing check | €595 |
| Full Inboard Overhaul | Complete strip, machine shop, reassembly, dyno test, 12-month warranty | €4,500 |
* Prices exclude VAT (21%) and parts. Mobile call-out fees apply outside the workshop. Engine removal/reinstallation quoted separately for inboards.
Warranty on All Work
We stand behind every hour we bill and every part we fit. Warranty terms are clear, documented, and honoured without argument.
🔧 Routine Service
6 months labour warranty. If a fitted part fails due to installation error, we replace it and the labour is free.
🔩 Component Replacement
12 months on labour + OEM part warranty. Turbo, pump, alternator, and starter replacements covered.
🏗️ Overhaul & Rebuild
12 months unlimited-hours warranty on the complete assembly. Includes one free 250-hour inspection.
⚡ Electric & Hybrid Install
24 months on installation workmanship. Battery and motor warranties pass through from the manufacturer.
🚛 Mobile Service
Same warranty as workshop jobs. If a mobile repair needs follow-up, the return visit is free within 30 days.
📋 Installation & Rigging
12 months on all installation labour. Propeller matching and control-cable routing guaranteed leak- and bind-free.
Fleet & Commercial Contracts
Charter operators, tour boats, workboats, and marina fleets rely on predictable maintenance to keep revenue flowing. We build custom service contracts that fit your operating schedule and budget.
Contact our Fleet Manager → for a tailored maintenance plan and volume quotation.
Seasonal Service Calendar
Book early. Our workshop fills up 4–6 weeks ahead of peak season.
Pre-Season Commissioning
Fluid top-ups, battery testing, cooling system checks, sea-trials, and propeller inspection. Get your engine ready before the first warm weekend.
Mid-Season Maintenance
Impeller checks, anode inspection, oil top-ups, and minor repairs. Ideal for high-hour commercial operators and charter fleets.
End-of-Season Winterization
Fogging, draining, stabilising, battery care, and protective storage. The most important service of the year — don't skip it.
Off-Season Overhauls
Major rebuilds, repowers, and electric conversions. Longer turnaround accepted = better rates. Book your winter slot now.
Frequently Asked Questions
Ready to Get Back on the Water?
Whether it's a routine oil change, a full overhaul, or an emergency breakdown at the marina — our team is ready. Get a free, no-obligation quote today.
