Generators are built to be tough – but like any hardworking machine, they need regular care to keep running efficiently and reliably. Whether you’re using your generator for prime power or backup support, knowing when to service it can save you from unexpected failures and costly downtime. Here’s a simple guide to help you stay on top of your generator’s service schedule:
1. After a Set Number of Running Hours
Most generator manufacturers recommend a basic service every 250 to 500 hours of operation. For heavy-use or prime power generators, this interval may be shorter. These services typically include:
- Oil and filter changes
- Fuel system checks
- Air filter replacements
- General inspection of belts, hoses, and cooling systems
Tip: Use a log book, or your generator’s controller or hour meter to track run-time accurately.
2. At Regular Time Intervals (Even If Not in Use)
Even if your generator isn’t used frequently, it still requires servicing every 6 to 12 months. Why? Because oil degrades, batteries discharge, and seals and hoses can deteriorate with time.
These preventative checks help ensure the unit is ready when you need it most, especially in critical applications like hospitals, businesses, or rural power setups.
3. After Heavy Load Events or Power Outages
Extended use during outages puts extra strain on your generator. If your unit has been running for long periods or carrying a high load, it’s smart to schedule a post-use inspection or service.
4. When You Notice Performance Issues
Keep an eye (and ear) out for:
- Unusual noises or vibrations
- Difficulty starting
- Excess smoke from the exhaust
- Fluctuations in power output
These are signs your generator may need urgent servicing to prevent bigger problems down the line.
What a Good Generator Service Should Include:
- Oil and filter replacement
- Fuel system and injector cleaning
- Battery check and terminal cleaning
- Load testing
- Alternator inspection
- Cooling system maintenance
- Exhaust and emissions checks
At Sub Sahara Power Distributors, our experienced technicians are trained across leading brands like Rehlko, Kohler, Mecc Alte, and more. We also provide genuine spares, filters, and aftersales support to keep your generator running at its best.
Stay Powered, Stay Prepared
Regular generator servicing isn’t just maintenance – it’s risk prevention. Book your next service with our team and keep your power secure, your operations smooth, and your peace of mind intact.



