How to Maintain a Generator
Generator Maintenance
When it comes to servicing your generator, there’s often some confusion, especially if you’ve never done it before. Below is a detailed guide covering every step you’ll need to keep your generator running smoothly and reliably.
Petrol Generators
Service interval: Every 6 months or 100 hours
Basic Petrol Service Kit Includes:
- Air Filter
- Spark Plug
- Petrol Filter
- Fuel Pipe
- Oil Filter
- Oil Funnel
- Spark Plug Spanner
Additional items:
- Engine Oil (Check manufacturer’s specs)
- Trickle Battery Charger
- Oil Pan
Steps to Service Your Petrol Generator:
- Remove the battery and place it on charge.
- Remove the sump plug and drain the oil into a clean oil pan.
- Refill with clean oil using the sump plug opening.
- Let oil settle and lubricate the motor.
- Drain the petrol via the fuel filter.
- Replace the fuel filter and pipe.
- Refill with clean petrol.
- Replace dirty air filter.
- Remove and replace the spark plug (be careful not to cross-thread).
- Run the generator for a few minutes to ensure everything functions properly.
Need help? Watch the video guide below for a visual walkthrough:
Diesel Generators
Service interval: Every 12 months or 300 hours
Basic Diesel Service Kit Includes:
- Air Filter
- Glow Plug
- Diesel Filter
- Fuel Pipe
- Oil Filter
- Oil Funnel
- Glow Plug Spanner
Additional items:
- Engine Oil (Check manufacturer’s specs)
- Trickle Battery Charger
- Oil Pan
Steps to Service Your Diesel Generator:
- Remove the battery and place it on charge.
- Drain old oil into a clean oil pan.
- Refill engine with clean oil.
- Let oil circulate for a few minutes.
- Drain the diesel via the fuel filter.
- Replace fuel filter and pipe.
- Refill with clean diesel.
- Replace dirty air filter.
- Remove and replace glow plug (only if needed, avoid cross-threading).
- Run the generator for a few minutes to confirm operation.
Tip:
Never run your diesel generator on less than 40% of its rated load. This can cause engine glazing.
What is Engine Glazing?
Engine glazing occurs when a diesel engine consistently runs under low load (under 40%). This leads to carbon buildup and can damage the engine’s internal components, particularly the cylinder sleeve. Always run your diesel generator with an appropriate load.