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A scheduled care plan built around your equipment, operating hours and site requirements.
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Generator servicesGenerator servicing & maintenance
UK generator servicing, maintenance contracts, load bank testing, fault finding and repairs. Keep your standby or prime power system ready for the work it needs to do.
Protect your power. Plan your maintenance.
Generator servicing matters long before the power goes off.
A standby generator is an investment in continuity. When the mains supply fails, your business needs it to start, accept the load and keep running. Regular diesel generator servicing helps identify developing faults, reduce avoidable downtime and protect the working life of your equipment.
FW Power provides generator servicing and maintenance support for UK businesses, from a single standby set to generators supporting demanding commercial and industrial sites. We combine practical engineering with organised service management through ServiceM8.
Low running hours still need attention
A generator that rarely runs still needs a maintenance plan. Starting batteries age, stored diesel can deteriorate, and cooling systems, hoses and connections need attention. A low hour reading is not a reason to overlook the manufacturer's time-based service requirements.
Servicing gives you an opportunity to deal with small defects before they become an expensive repair or a failed start when the generator is needed.
Look beyond an oil change
A properly scoped visit considers the generator as a working system. Depending on the equipment and agreed service, checks can cover:
- Engine oil, filters and visible fluid leaks.
- Starting batteries, charging and electrical connections.
- Fuel supply, filters and signs of contamination.
- Coolant, radiator, belts, hoses and ventilation.
- Controls, alarms and the generator's operating condition.
How often should a diesel generator be serviced?
Follow the manufacturer's calendar and running-hour schedule, using whichever limit is reached first where specified. Prime power duty, heavy use, dust, temperature and the site environment can affect the plan. We can review your make, model, hours, service history and application to propose an appropriate schedule.
Explore generator maintenance contractsEngineering supported by better service records
Introducing our ServiceM8 service portal.
FW Power has implemented ServiceM8 to support our generator servicing operation. It brings job information, scheduling and service documentation into a connected system, helping our office and engineers keep each visit organised.
For generator owners and facilities teams, the benefit is clearer communication and a more useful record of the work. Equipment details, observations and follow-up requirements are easier to keep connected to the right service job.
How ServiceM8 supports better generator care
- Organised service visits
- Scheduling and shared job details help the team coordinate engineers, site information and planned appointments.
- Digital job records
- Notes, photographs and documents can be kept with the job, giving the team useful context for future visits.
- Inspection forms and reports
- Digital forms support consistent recording of checks and findings. Asset service reports can document work against individual equipment.
- Equipment history
- Asset records can connect a generator's details, location and service history, particularly useful where a site has more than one machine.
- Clearer communication
- Quotes, invoices, booking messages and configured reminders help keep service administration moving and reduce paperwork.
- Easier follow-up
- Where an asset QR label is provided, customers can scan it to view equipment details and report an issue through a branded web page.
These are ServiceM8 capabilities. Reports, reminders and customer access are provided according to the features enabled and your agreed service arrangement. Ask our team which options are available for your generator.
Download ServiceM8
Use the links below for iPhone, iPad and Android. App access requires an authorised ServiceM8 account. Customers can use the service links we send without installing the staff app.
Practical engineering support
Generator services from FW Power
Generator support
Installation & commissioning
Site planning, cabling, controls, installation and commissioning for complete power systems.
View serviceGenerator support
Load bank testing
Assess generator performance under controlled electrical load, with testing scoped to the machine.
View serviceGenerator support
Repairs & fault finding
Diagnostics, breakdown investigations and repair proposals for generator owners.
View serviceGenerator support
ATS, fuel tanks & controls
Automatic changeover equipment, external fuel storage, circuit breakers and control integration.
View serviceFWPG Verified Hours
ECU hour checking & verification
Check recorded engine hours on a used generator, including equipment bought from other suppliers or dealers. Subject to ECU compatibility.
Explore hour verification
For used generator buyers
and existing owners.
Buy with a clearer picture
Generator ECU hour checking & verification
Buying a used diesel generator from another supplier or dealer? Our FWPG Verified Hours service helps you check the engine hours recorded in the generator’s electronic control unit (ECU), where supported, and compare them with the hours shown on its controller or display.
You do not need to buy your generator from FW Power to use this service. Speak to us before a purchase or about equipment you already own.
- Tell us about the generatorSend the make, model, engine details, displayed hours and location so we can confirm compatibility and quote.
- Check the recorded hoursWe read accessible ECU hour data and compare it with the displayed reading.
- Understand the findingsWe explain the readings, any differences and what further investigation may be needed.
Checks depend on ECU compatibility and diagnostic access. Recorded hours alone cannot establish a complete operating history, particularly where components have been replaced.
Enquire about ECU hour checkingCare throughout the generator life
Support that starts with your equipment.
FW Power services and maintains generators from all major manufacturers, including equipment purchased elsewhere. We can arrange one-off inspections or a maintenance proposal tailored to your operating hours and site requirements.
Our service work can cover the engine, fuel and cooling systems, alternator, starting batteries, controls, oil and filter changes, with load bank testing scoped separately or alongside a visit.
Request a service proposal
Plan with confidence
Generator servicing questions
For a service proposal, send us your generator make, model, site postcode, running hours and any known faults. Include the last service date if available.
Explore our 75-point service inspection and load bank testing guidance, or talk to our team about the work your site needs.
Arrange generator servicingCall +44 1829 863497Does a standby generator need servicing if it has hardly run?
Yes. Low running hours do not remove time-based maintenance requirements. Batteries, fuel and other components need attention even when the generator spends most of its time on standby. Follow the schedule for your specific machine.
Is load bank testing the same as generator servicing?
No. Servicing maintains and checks the equipment, while load bank testing assesses its performance under a controlled electrical load. Starting the engine alone does not demonstrate its ability to support the required load. We can discuss testing alongside your maintenance visit.
Can FW Power service a generator bought from another supplier?
Yes. We service and maintain generators from major manufacturers, including equipment purchased elsewhere. Send the make, model, location and service requirements so we can confirm the scope and provide a proposal.
How do I access my ServiceM8 service information?
Use the service link or asset QR label supplied by FW Power, where provided. Contact our team if you need help with access or a service report. Installing the ServiceM8 app does not automatically give access to FW Power customer records.