When the power goes out, your Generac generator is your home’s hero. But like any hero, it needs regular care to stay ready for action. Wondering when to service your generator? Here is a quick guide:
1. After Every 200 Hours of Use. If your generator runs often, especially during storm season, check your owner’s manual for the hours-based service interval. Many call for service after about 200 hours of operation, which is roughly 8 days of continuous use.
2. At Least Once a Year. Even if you do not use it much, your generator needs a yearly checkup. Oil changes, filter replacements, and general inspections keep it healthy and ready to go when you need it most.
3. After Major Weather Events. Heavy snowstorms, flooding, and severe storms can strain your generator. After severe weather, a quick inspection can catch small problems before they become costly repairs.
4. When You See a Warning Light. Do not ignore flashing lights or error codes. They are your generator’s way of asking for help. Schedule a service right away to avoid unexpected breakdowns.
Why Annual Service Should Happen Before Winter
In Maine, the outages that matter most tend to come with ice storms, heavy wet snow, and nor’easters, usually between late fall and early spring. That is exactly when you cannot afford to find out your generator will not start. Scheduling your annual service in late summer or early fall means any worn part is found and fixed while the weather is mild and before technicians get busy with storm calls.
It also helps to think about what your standby generator is protecting. In a Maine winter, a long outage can mean no heat, a stopped sump pump, a dead well pump, and food spoiling in the freezer. A generator that has not been maintained is a risk in the one moment you rely on it.
How Your Generator Keeps Itself Ready
Most Generac home standby units run a short self-test, often called the exercise cycle, on a regular schedule, commonly about once a week for a few minutes. This keeps the engine lubricated and lets the unit check itself. You can usually see the result on the controller display. If the unit shows a fault or fails to complete its cycle, that is your cue to call for service and not wait for the next outage.
Check your owner’s manual for how to set the exercise day and time, and choose a time when the noise will not bother you or your neighbors. Do not skip the cycle to avoid the sound, because a generator that never runs is more likely to fail when needed.
What Does a Typical Service Include?
- Oil and filter change
- Air filter replacement
- Spark plug check
- Battery inspection
- System diagnostics
- Cleaning and tightening of connections
Oil and filter
Engine oil breaks down with time as well as with use, so oil and filter changes should follow the schedule in your owner’s manual, even if the unit has hardly run. Always use the oil type the manual calls for.
Battery
A weak battery is one of the most common reasons a standby generator fails to start. The battery should be inspected and tested every year, and replaced when it is weak, before the cold season begins. Cold weather lowers battery output, which makes a marginal battery much more likely to fail in January than in July.
Air filter and spark plugs
A clogged air filter and worn spark plugs reduce power and make starting harder. Both are routine wear items and are part of a normal service. Following the intervals in your owner’s manual keeps the engine running cleanly and helps it start on the first try.
Simple Checks You Can Do Between Services
- Keep the area clear. Leave several feet of open space around the unit and remove leaves, debris, and anything stacked against it. After a heavy snowfall, clear snow away from the enclosure and the vents so the unit can breathe.
- Look and listen. Note any new noises, fluid leaks, or rust, and check the controller for warning messages.
- Watch for pests. Mice and other animals sometimes nest in enclosures, so keep an eye out for signs of chewing or nesting.
- Keep a log. Write down the date of each service, any outages, and the run time, so you know when the next service is due.
Never open the generator to work on electrical parts or fuel connections yourself. Generators involve fuel, high voltage, and carbon monoxide risks, and service is best left to a trained technician.
Do You Need Service Right Now?
Call us if any of these are true: your generator is more than a year past its last service, you have run it through a long outage, you see a warning light or error code, or you are not sure when it was last serviced. A visit now costs far less in time and stress than a failure in the middle of a storm.
Pro tip: Put your annual service date on the calendar so you never miss it. One Stop Home Repair is an authorized Generac dealer, and you can read more about our Generac generator service and repair. If you are considering a standby unit for the first time, see our Generac generator installation page.
Stay powered up and protected. Book your generator service with One Stop Home Repair today. Call us at (207) 866-5690 or schedule online. Peace of mind is just one service away.
