When power failures hit, Generac generators kick in to save the day, automatically restoring electricity to keep your home or business running. Whether it’s a major weather event or just a minor outage, Generac’s backup power systems provide the reliable emergency power you can count on when you need it most.
But like any engine-powered equipment, Generators require periodic maintenance and part replacements to keep performing at their best. By properly identifying which Generac parts need replacing on your specific model, understanding repair procedures, and using factory-recommended maintenance schedules, you can keep your Generac generator in peak operating condition for years to come.
In this guide, we’ll cover the most common Generac generator parts that require replacement, how to select the right components, tips for hassle-free DIY part installation, and answers to frequently asked questions about maintaining your Generac unit. Let’s keep the lights on!
Critical Generac Generator Parts to Replace
Generac generators consist of several smaller components that wear out over time and must be replaced. Here are some of the most important parts to closely monitor and change at recommended intervals:
- Oil Filter – This filter cleans contaminants from engine oil to prevent damage. Replace at each oil change.
- Air Filter – The air filter keeps dust out of the engine. Inspect and change when dirty.
- Spark Plugs – Spark plugs ignite the engine’s fuel. Replace per schedule to maintain performance.
- Fuel Filter – The fuel filter screens debris from entering the fuel system. Swap for optimal flow.
- Fuel Cap and Lines – Replace cracked fuel caps and lines to prevent dangerous leaks or blockages.
- Battery – Powers electric start engines. Dead batteries prevent startup. Test and replace when weak.
- Brushes – These contacts transfer power inside generator. Replace when excessively worn.
- Voltage Regulator – Regulates generator output voltage. Replace if voltage is unstable.
- Gaskets – Seal critical engine parts. Replace leaky, brittle gaskets during repairs.
Follow the maintenance schedule in your Generac generator manual to replace common parts at recommended intervals. Use only manufacturer-approved Generac OEM parts to ensure continued safety, reliability, and warranty coverage.
Selecting the Right Replacement Parts for Your Generac Generator
With so many generator models produced over their 60+ year history, choosing the correct replacement parts for your specific Generac unit is critical for proper fit and performance. Here are some tips:
- Know your generator’s model number – This allows using Generac’s online parts finder tool specific to your unit. The model number can usually be found on a label on the generator housing.
- Use Generac’s parts diagrams – Exploded parts diagrams in the manual show exactly how your model fits together and call out part numbers needed.
- Match part specifications – Double check specifications like voltage, start type, wattage match your generator’s specs to avoid issues.
- Buy from authorized dealers – Purchase only genuine Generac parts from factory-authorized online or local dealers.
- Consider date ranges – Some Generac parts are revised over the years and different part number suffixes are used. Check date ranges for compatibility.
- Buy gasket sets – These kits contain all gaskets needed for an engine overhaul. Avoid leaks by replacing them together.
With some simple web research and basic model details, you can look up and order the perfect Generac parts for your repair or scheduled maintenance needs.
DIY Generator Part Replacement Procedures
Here are some tips for smoothly replacing common Generac generator parts on your own:
- Review the manual – Consult the factory service manual for step-by-step part replacement instructions and torque values for your model.
- Have proper tools ready – A socket set, wrenches, screwdrivers, torque wrench, drain pan and shop rags will be needed for most jobs.
- Run engine before oil drains – This warms the oil so it will drain quickly and fully from the old filter and engine crankcase.
- Let parts cool completely before servicing if the unit was running. Avoid burns.
- Clean components before disassembly using degreaser sprays and rags for easiest service.
- Follow specifications for gasket sealants, torque values, wiring connections to avoid leaks or issues.
- Test operation and check for leaks after any reassembly before returning to service.
With the proper tools, adequate mechanical skills, and by following Generac’s instructions, many common parts can be replaced DIY. But larger jobs may warrant hiring a certified Generac technician to ensure proper maintenance.
Regular Maintenance Keeps Generac Generators Running Strong
Beyond replacing parts only when they fail, following consistent preventative maintenance is key to gaining the longest life from your Generac generator:
- Keep the generator exterior clean by wiping down periodically. Avoid letting water or snow collect on enclosure.
- Change oil and filters, replace spark plugs per the timeline in your factory maintenance schedule. Don’t delay oil changes.
- Inspect the battery and terminals annually. Clean any corrosion, test battery charge, replace if weak.
- Check the exhaust system for leaks or damage that could lead to deadly carbon monoxide accumulation.
- Periodically test the automatic transfer switch to confirm it engages power properly when needed.
- For standby generators, perform biweekly or monthly exercise runs to circulate oil and confirm everything is operating as intended.
- Flush fuel systems and add fuel stabilizer before off-season storage to prevent stale gas buildup.
Proper care and maintenance will keep your Generac generator working like new when you need it to provide that critical backup power during outages.
Answers to Most Common Generac Generator Questions
Here are some answers to frequently asked questions on maintaining Generac generators:
How do I find the right replacement parts for my Generac generator?
Locate your specific generator model number, then use Generac’s online parts finder tool to identify needed components for that model. Verify part compatibility.
Where can I get factory service manuals for Generac generators?
Generac has downloadable service manuals available on their website containing service procedures, specifications, diagrams and parts lists for all models.
How often should I change the oil in my Generac generator?
For standby generators, Generac recommends oil changes every 100-200 hours of runtime or annually. Portables may be 50-100 hours. Check your manual.
How can I tell if the voltage regulator is bad on my Generac?
Symptoms of a faulty regulator include no power output, fluctuating voltage, or output voltage outside the specified range. Use a multimeter to test and compare to manual specs.
Where do I find replacement parts for an older Generac generator?
Generac stocks maintenance components for most legacy generators, some dating back 30+ years. Contact their customer service with your model number to check on part availability.
Is servicing a Generac generator difficult for DIYers?
Basic maintenance like changing oil, filters, and spark plugs is very achievable for most owners. More complex repairs may require a certified Generac technician.
With essential preventative maintenance and timely replacement of common parts as needed, your Generac generator will have your back providing reliable backup power for years. Follow your product’s maintenance schedule, correctly identify and install replacement parts, and address issues promptly to keep your unit running strong. Generac is power you can trust!