Skip to content

Servicing Your Generac Generator: The Process


Generac generators are a beacon of energy security, offering a dependable lifeline when power outages strike. Yet, like any mechanical device, they demand regular upkeep like knowing how to service a Generac generator to sustain their peak performance. This guide aims to provide insights into the essentials of servicing Generac generators, outlining the process, associated costs, and the optimal service intervals.

The Ins and Outs of Generac Generator Maintenance

Servicing Generac generators and keeping them in prime condition isn’t merely a standard maintenance chore; it’s a crucial measure in guaranteeing the reliability of this power safety net when it matters most. While we’ll guide you through the maintenance steps, it’s crucial to note that this task should be left to trained and certified professionals who know about the frequency of how often to service Generac generator.

Attempting a DIY approach could be risky and may even jeopardize your warranty. So, let’s delve into the step-by-step maintenance of your Generac generator.

Initial Visual Assessment

The preliminary visual inspection is a key starting point. This initial evaluation paves the way for the rest of the maintenance process. A technician will thoroughly inspect your generator, looking for signs of wear, loose connections, or potential leaks. This step is vital for catching issues early before they snowball into major problems that could leave you powerless during an outage.

Oil and Filter Replacement

Similar to your vehicle, your Generac generator relies on clean oil and filters for peak performance. Over time, oil can become contaminated, losing its lubricating properties and potentially causing engine damage. During the process of how to service a Generac generator, the technician will drain the old oil, swap out the oil filter, and replenish the generator with fresh, manufacturer-approved oil. This critical step ensures proper lubrication and wards off expensive engine problems.

Refreshing the Air Filter

The air filter in your Generac generator is your first line of defense against dust and debris entering the engine. A congested air filter can hamper performance, reduce efficiency, and increase fuel consumption. During maintenance, the technician will locate and inspect the air filter. If it’s dirty or blocked, it will be promptly replaced to maintain optimal airflow and engine health.

Spark Plug Examination

The spark plug, although small, plays a critical role in igniting the fuel-air mixture in your generator’s engine. Over time, spark plugs can corrode or wear out, resulting in inefficient combustion and subpar performance. During the process of how to service a Generac generator, the technician will evaluate the spark plug’s condition and replace it if necessary. This ensures that your generator achieves the proper ignition needed for reliable operation.

Battery Assessment

Your generator’s battery is crucial for starting the unit when needed, this is a key aspect of servicing Generac generator. Ignoring the battery’s condition can result in annoying failures when you need backup power. As part of the maintenance process, the technician will inspect the battery, checking for terminal corrosion and ensuring it holds a charge. If the battery is in poor condition or unable to maintain a charge, it will be replaced to ensure reliable starts.

Coolant Level and Quality Check

Generac generators use coolant to keep the engine temperature in check, preventing overheating and potential damage. The maintenance technician will assess the coolant level and quality during the service check. If the coolant is low or shows signs of contamination, adjustments or replacements will be made as specified in your generator’s manual. Proper coolant levels are essential for ensuring the engine operates within safe temperature limits.

Load Bank Testing

Load bank testing is a crucial step in confirming that your generator can handle its designated load capacity. This process simulates real-world conditions to ensure the generator functions correctly under load. While load bank testing is typically performed by professionals during maintenance, it’s important to understand its role in validating your generator’s performance under various loads.

Control Panel Inspection

The control panel of your Generac generator acts as the nerve center for monitoring and adjusting settings. During maintenance, the technician will thoroughly inspect the control panel, ensuring that all functions and settings are working correctly. This includes verifying that the display provides accurate information and that you can start and stop the generator as intended.

Fuel System Check

The fuel system in your generator, comprising fuel lines, filters, and injectors, is crucial in delivering the necessary fuel for operation. Any blockages or issues in this system can disrupt fuel delivery and compromise performance. As part of maintenance, the technician will inspect the fuel system components, ensuring they are free from blockages or damage. If necessary, they will replace any worn or blocked parts to maintain consistent fuel flow.

Exhaust System Evaluation

Finally, the exhaust system of your Generac generator is thoroughly assessed during maintenance. A properly functioning exhaust system is vital for safety, as any issues could pose a significant risk. The technician will carefully inspect the exhaust pipes and mufflers, looking for leaks or damage. Ensuring the exhaust system is in good condition is crucial for the safe operation of your generator.

Understanding the Cost of Servicing Generac Generators

The cost of maintaining and servicing Generac generators can fluctuate based on factors such as the generator’s size and model, its age, and your location. On average, you can expect to pay between $100 and $500 for standard maintenance service. While it may seem like an added expense, consider it an investment in the reliability and lifespan of your generator. Regular maintenance can save you money in the long run by preventing costly breakdowns and ensuring your generator operates efficiently.

How often to service a Generac generator 

The optimal frequency for servicing Generac generators can vary depending on several factors, including its usage and environmental conditions. However, as a general guideline, here’s how often to service Generac generator you should consider maintaining your generator:

  1. Annual Maintenance: This ensures the unit’s readiness at all times and can catch and address any issues before they become major problems.
  2. Bi-Annual Checks: For heavily used generators or those in extreme climates, the extra attention can help ensure uninterrupted operation during critical times.
  3. Oil and Filter Changes: Typically after 200 hours of operation or annually. Keep track of the hours of operation to determine when this service is needed.
  4. Fuel System Cleaning: Every 2 to 3 years  the fuel system should be cleaned and checked, based on the fuel type.

Wrapping Up

Servicing Generac generators is a critical aspect of ensuring its reliability, longevity, and safety. While it may come with a cost, the peace of mind that comes with knowing your generator will perform when needed is invaluable. Remember, always leave the maintenance of your Generac generator to qualified professionals who are trained and certified. Trying to maintain it yourself can be risky and may lead to more significant issues down the line.

By adhering to a regular maintenance schedule and promptly addressing any issues, you can trust your Generac generator to be a dependable source of backup power, providing you with peace of mind during unexpected outages.