An RV generator is one of those things you don’t think about until it refuses to start somewhere far from civilization.
Regular servicing is what separates a generator that runs for years from one that fails at the worst moment.
The good news is that most maintenance is straightforward if you know what to check and when.
Why RV Generator Maintenance Is Critical?
Unlike home generators, RV units:
- Sit unused for long periods
- Operate in dust, heat, and vibration
- Often run under inconsistent loads
This combination leads to fuel issues, clogged systems, and wear that builds up quietly.
Basic RV Generator Maintenance Schedule:
A simple routine prevents most problems.
Every 50–100 hours:
- Check oil level
- Inspect air filter
- Look for leaks or loose connections
Every 100–150 hours:
- Change engine oil
- Clean or replace air filter
Every 200–300 hours:
- Replace spark plug
- Inspect fuel system
Once per season:
- Full inspection and testing under load
Skipping these intervals is the fastest way to kill a generator.
RV Generator Service:
Step 1: Turn Off and Cool Down
Never service a hot generator.
Let it cool completely to avoid burns and incorrect oil readings.
Step 2: Change the Oil
Old oil is the number one killer of small engines.
How to do it:
- Drain old oil completely
- Replace with manufacturer-recommended oil
- Check level after refill
Dirty oil reduces lubrication and increases wear.
Step 3: Check and Clean Air Filter
A clogged air filter restricts airflow and reduces efficiency.
- Remove the filter
- Clean it (if reusable) or replace it
- Check housing for dust buildup
Step 4: Inspect the Spark Plug
A worn spark plug leads to hard starts and misfires.
- Remove and inspect for carbon buildup
- Clean or replace if needed
- Check gap before reinstalling
Step 5: Fuel System Check
Fuel problems are extremely common in RV generators.
Look for:
- Old or stale fuel
- Clogged fuel lines
- Dirty carburetor
If the generator hasn’t been used for months, fuel degradation is likely the issue.
Step 6: Run the Generator Under Load
This step is often skipped, but it’s critical.
Turn on appliances like:
- Air conditioner
- Microwave
- Battery charger
Let the generator run for 20–30 minutes.
This helps:
- Burn off moisture
- Keep internal components lubricated
- Prevent carbon buildup
Step 7: Inspect Electrical Output
Check that your generator provides stable power.
Signs of issues:
- Flickering lights
- Devices not working properly
- Voltage fluctuations
Common RV Generator Problems
These are the most frequent issues we see:
- Generator won’t start after storage
- Runs but shuts down under load
- Excessive noise or vibration
- Fuel smell or leaks
- Low or unstable power output
Most of these problems come from lack of maintenance.
Tips to Extend Generator Life
Simple habits make a big difference:
- Run the generator at least once a month
- Never let fuel sit too long
- Keep it clean and dry
- Avoid overloading
- Use quality oil and parts
When DIY Is Not Enough?
Some issues go beyond basic maintenance.
You should consider professional service if:
- Generator won’t start at all
- It stalls under load
- There’s electrical instability
- You suspect internal damage
- Fuel system is heavily clogged
Professional RV Generator Service
At Custom Way RV Services, generator servicing is part of a broader approach to making your RV reliable, not just functional.
We help with:
- Full generator diagnostics
- Carburetor and fuel system cleaning
- Electrical system testing
- Load performance optimization
- Integration with solar and battery systems
- Complete RV electrical upgrades
In many cases, generator issues are connected to the overall electrical system, not just the unit itself.
Servicing your RV generator is not complicated, but it’s something you can’t ignore.
Regular maintenance keeps it reliable, efficient, and ready when you actually need it.
If you treat it like an afterthought, it will fail like one.