Engine
- Engine oil condition and level
- Oil filter
- Air filter
- Fuel filters
- Visible oil or fuel leaks
- Belts
- Hoses
Service checklist
Generator Service Checklist
A generator service is a list of checks and replacements that suit that engine, not a fixed script for every brand. The groups below are what a thorough visit is built from. Items are included when that make, model and configuration has them. A diesel water separator is not assumed on a small petrol set, and a petrol carburettor is not part of a diesel service.
- Scope follows the engine
- Diesel and petrol differ
- A run test closes the visit
- Onsite across Gauteng
Before any filter is changed
What is checked during a generator service?
The visit starts with the hour reading, the last service if it is known, and anything the set is already doing wrong. Leaks, a flat battery or an alarm are noted before fresh oil goes in, so a fault is not buried under a service.
Engine oil, filters, belts, hoses, coolant, fuel condition and the starting battery are the mechanical core. Voltage, frequency and the controller are the electrical core. An automatic-start test is included only where an ATS is fitted and it is safe to try the sequence.
The diesel maintenance checklist is the ongoing diesel version of this list, including water in fuel and injector symptoms. This page is the general service scope.
After the list
Final run test
Before service
Hours, alarms, visible leaks, oil level and why the visit was booked. A known fault is written down before parts are changed.
Electrical and controller
Voltage and frequency once it is running, AVR symptoms if voltage is wrong, connections that are visibly damaged, controller hours, mode and any stored alarm the module can show.
ATS and automatic start
Where a transfer switch is fitted, automatic operation is tested only as a controlled check. It is not a DIY exercise on a live board.
What the checklist cannot promise
Every engine does not have every item. The manual and the set in front of the technician decide the final scope.
A practical generator service checklist
Use this as a briefing list. It is not a manufacturer schedule, and it is not an instruction to open live electrical gear or a hot cooling system.
Cooling system
- Coolant level and condition
- Radiator fins and debris
- Coolant hoses
- Fan and belt condition
Fuel system
- Fuel condition
- Filters
- Lines and leaks
- Water or contamination where that engine has a separator
Starting system
- Battery condition
- Terminals
- Charger
- Starter behaviour on a start
Controller
- Alarms
- Operating mode
- Hour reading
- Service warnings
- Stored faults where the module supports them
Close of visit
- Start and run
- Voltage and frequency noted
- Leaks rechecked after the run
- Hours recorded for the next interval
Related Pages
Servicing, hours and load testing
Google reviews of ProService Generator Repairs
Google Review
Our Olympian generator required a major service, and they handled the oil, coolant, and filter changes with zero mess and minimal downtime to our operations.
Google Review
Their attention to detail during our 500-hour major service was incredible. They meticulously checked valve clearances, tightened mounts, and calibrated the AVR, making the machine run noticeably smoother.
Common Questions
Questions about the service checklist
What is included in a generator service?
Oil, filters and an inspection of the systems that set actually has, then a run so voltage and leaks can be seen. The exact list follows the engine.
Is this checklist the same for diesel and petrol?
No. The groups overlap. Fuel-system items do not. Use the diesel checklist when the set is diesel.
Do you change every filter every visit?
Only the filters that are due for that interval and that engine. A checklist is not an order to replace parts that are not in scope.
Is an ATS test part of every service?
Only where an automatic transfer switch is fitted, and only as a controlled test. Many portable sets do not have one.
Will the service include a load bank test?
Not by default. A loaded run or a load bank test is a separate booking when capacity is the question.
Can I use this list myself?
You can use it to see what a visit covers. It is not a guide to live boards, hot coolant or fuel-injection work.
What should I send before the service?
A data-plate photo, the hour reading if you can see it, and the fuel type.
Still unsure what the fault is? Call or WhatsApp 082 057 4605 for onsite diagnosis.
Service Areas
Onsite visits across Gauteng
Technicians travel to the generator. These are the main Gauteng areas. Suburb pages sit under each region.
What to send before we attend
ProService Generator Repairs confirms an onsite visit from these details. Send what you have. A missing model number does not stop the booking.
- Location
- The suburb or site, so the visit can be booked in the right area.
- Make and model
- The generator brand and model, if they are known.
- kVA
- The size printed on the data plate.
- Fuel type
- Diesel, petrol, LPG, natural gas, or dual-fuel.
- Controller model
- The module name on the panel, when it is visible.
- Fault or alarm
- What the set does, and any text on the screen.
- Photos
- The generator, the data plate, and the controller or alarm. Send these on WhatsApp.
Book a Visit
Book the service with the hours
The plate, the fuel and the hour reading are enough to scope the visit.
- Call
- 082 057 4605
- Message us on WhatsApp