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Maintenance Kit FAQs

Maintenance Kit FAQs

  • Why do I need a maintenance kit for my generator?

    All standby and portable generator owners need a Generac maintenance kit because it’s important to keep up with a regular maintenance schedule. Just like with a car or lawn mower, failure to complete regular maintenance can void your warranty. Doing what you can to ensure your unit works properly will give you peace of mind knowing it will work when it’s supposed to. You’ll be protecting your investment with genuine Generac parts. Lack of maintenance shortens the lifespan of your generator, and no one wants that.

  • Which maintenance kit is right for me?

    The maintenance kit that will work best for you depends on the model number of your unit. The product description for each maintenance kit we sell specifies which units the kit is compatible with. You can search by model number to get online product support and find out which maintenance kit you need. On under Service and Support, then Generac Owners, click on the Online Owner Support link. Type in your model or serial number and click search. You can also go to that page of our site here.

  • What parts are included in the maintenance kit?

    Every maintenance kit includes an air filter, oil filter, funnel and chamois for changing the oil, 2 quarts of synthetic oil, and spark plugs.

  • What specific parts do I need?

    For standby generators, you’ll need either a 75mm or 90mm Generac oil filter. For the air filter, you’ll need an OC8127. You’ll need our 059503 spark plugs. For portable generators, you’ll need the 0L13630202 oil filter, and the 0L13630113 air filter. For portable unit spark plugs, the 0J00620106 is compatible. If you have any questions about what parts you need, you can look them up with your serial number or give us a call.

  • How much does a maintenance kit cost?

    The cost of a maintenance kit ranges from $55-66. Depending on the type of generator you have—size and kilowatt power--the maintenance kit you need will fall on the low, mid, or high end of this price range. The amount of money a maintenance kit will save you in the long run is more important than the upfront cost of the kit. By properly maintaining your generator, you can avoid costly and unexpected repairs while improving the overall efficiency of your unit.

  • Where can I buy a maintenance kit?

    Generac has an online store location where you can order a standby generator maintenance kit directly from us. If you go to our tune up items ordering page, you will see all the possible maintenance kits we offer. By clicking on the maintenance kit description that matches your unit’s kilowatt value, it will list the model numbers each maintenance kit fits. You can sort by product name or price. You’ll also be able to create or sign in to an account on our Order Tree site to save contact and other information for future purchases.

  • What other maintenance parts are available, and what else should I do to maintain my generator?

    Changing the oil, oil filter, air filter, and spark plugs are most important for maintenance. However, there are other things you can do to keep your generator in the best possible condition. Generac also offers base fascia, which snaps around the bottom to protect the trim and edges of your unit. Generator paint can chip over time due to temperature and weather elements. We have a touch up paint kit that includes medium gray or gray spray paint, scratch removal solution, and a cloth. While touching up paint and adding fascia may seem like cosmetic tasks, they can extend the life of your generator by preventing rust and corrosion.

  • What accessories are available?

    Fuel level monitors are available to ensure you have enough fuel to get through unexpected power outages. This monitor is now wireless, and the Tank Utility app alerts you before the fuel levels get low. 

  • What tools do I need to perform maintenance?

    The first thing you’ll need is a screwdriver or 10mm Allen wrench to remove the screws that hold the main panel on. Next, you’ll need a 3/8 socket wrench to remove the old spark plugs. You’ll also need a ratchet, pliers, and a spark plug gap gauge. For changing the oil, the kit comes with a cloth and funnel. You may want to use a drip pan or plastic container for draining out the old oil.

  • How often do I need to maintain my generator?

    If you refer to your owner’s manual, there will be a generator maintenance schedule in it to tell you how often you need to perform maintenance. Most generators require maintenance once per year.  

  • Are there any safety precautions I should take when performing maintenance on my generator?

    While we know you will use common sense and be safe, there are a few tips to keep in mind that will ensure your safety when maintaining your generator.

    First, run the generator for a cool-down period of one minute. After that, turn the main line circuit breaker and utility disconnect off. You can also remove the fuse as an extra precaution. Be sure to restart the generator when you are finished. 

    Be sure to wipe away any drips of old or new oil when you are finished changing the oil. 

    If you have a diesel-powered generator, turn it off and let it cool before refueling. This ensures that hot gasoline will not spill on the engine parts or burn your skin.

    Keep children and pets away from you and the generator while you are performing maintenance, just in case.
  • What maintenance do I need to do and how often?

    Some generator units require a screwdriver to remove the front panel. Others have a grip and you can simply lift it off.

    Maintenance should be done on your portable or standby generator once per year, just as you would with a lawn mower or ATV. The first and probably most important maintenance task is changing the oil. You should use SAE 30 oil (most maintenance kits come with two quarts). First, remove the oil tank cap. Using a funnel, drain out the old oil. Next, use a funnel to pour in new oil to fill the oil tank until it reaches the "FULL" mark on the oil dipstick. You should also change the oil filter every time you change the oil.

    Next, the air filter should be changed as well. You will know when the air filter needs to be replaced because it will be dirty enough that you cannot see through it when you hold it up to a light source.

    Another thing you should do as needed is change the spark plugs (also included in all maintenance kits). You should check for corrosion on them every time you perform maintenance on your generator. You’ll know they need to be replaced if the engine is idling rough, your engine misfires, or the unit is using more fuel than normal. To change the spark plugs, simply use a socket wrench to remove the old ones and put the new ones on, tightening them, but not overtightening them.

    Other maintenance you should do on your generator is touch up chipped paint, remove scratches, and protect your unit with fascia. You should also check for cracks or instability in the concrete base your unit stands on. Periodic tests can be done to detect problems with other parts as well. If you need to replace any part in your generator, Generac sells replacement parts. You can install them yourself, or contact a licensed technician to complete the repairs for you.

    If you don’t keep up with maintenance, you are shortening the life of your unit and could potentially void your warranty.

    If you refer to your owner’s manual, there will be a generator maintenance schedule in it to tell you how often you need to perform maintenance. 

  • What does my warranty cover?

    Generac offers standard 5-year warranties as well as extended 7-10 year warranties. They cover repairs that result from product defects and parts that require premature replacement. Warranties do NOT cover:

    • Rust on enclosures after 1 year
    • Costs of normal maintenance
    • Damage caused by accidents, shipping, handling, or improper storage
    • Damage caused by use of improper fuel
    • Damage due to using non-Generac parts
    • Failure due to abuse, neglect, improper installation, or rodent infestation
    • Rental equipment used while warranty generator repairs are being performed.
    • Damage caused by any mode of transport deemed not standard by Generac
    • Products that are modified without Generac authorization
    • Starting batteries, fuses, light bulbs, or engine fluid
    • Additional costs for overtime, holiday, or outside of business hours repairs
    • Acts of God, theft, fire, or other matters beyond the manufacturer's control

    While your warranty cannot cover these things, some of these can be covered under your homeowner’s insurance policy. Be sure to inform your insurance provider when you purchase a home standby generator so that it can be included in the policy.

  • Where do I find my model number on my standby and/or portable generator?

    The model number is printed on every standby and portable generator unit and is easy to find. The descriptions below detail where you can find it on each unit.  

    Standby Generators

    8KW-20KW (2015 models to present): Lift the top cover/panel of your unit and you will find the model number located on the far left side near the top corner. 

    9KW-22KW (2016 to present): Lift the top cover/panel of your unit. You will find the model number on a label wrapped around the right side and front panels, near the top and underneath the front bar.

    22KW-60KW: Open the large, square front panel. The model number is located on the bottom box on the left side near the center of the unit.

    15KW-50KW: Remove the left front panel. You will find the model number in a small square area on the left side of the unit near the bottom. 

    Portable Generators

    GP1800 – GP3300: The serial/model number is located on the back panel of the unit on a decal.

    GP5000 – GP8000(E): The serial/model number is located on the side panel of the unit.

    GP15000 – GP17500(E): The serial/model number is located in a panel in the center of the unit.

    XP4000 – XP10000(E): The serial/model number is located on a panel near the center and slightly off to the right.

    XG4000 – XG10000(E): The serial/model number is located in the center and near the bottom of the unit.

    XT8000E: The serial/model number is located on the backside of the unit.

    XC6500 – XC8000E: The serial/model number is located on the bottom of the unit near the back panel.

    RS7000e: The model number on this unit is located on the bar underneath the unit.

    GP2200i: This unit’s model number is located on the outside of the unit near the bottom. 

    iQ2000: The serial number on this unit is located near the top of the unit towards the center.

    IX800 – IX2000: The serial number is located on the bottom left corner of this unit

  • What materials are each of the maintenance kit parts made of?

    The oil filters are made out of a porous, cellulose fiber medium, along with synthetic fibers such as glass and polyester. It is finished with a resin to give it strength. Air filters are made with pleated paper surrounded by aluminum mesh and finished with two hard plastic rings on the top and bottom. Spark plugs have a metal threaded shell, which is electrically isolated from a central electrode with a porcelain insulator. There is a heavy insulated copper wire, which creates the “spark” it needs to work.

  • I don’t want or need a complete maintenance kit right now. Where can I buy individual parts?

    You can buy each of the individual parts found in the maintenance kit separately. On, you can search for the part you need and purchase it alone. You will need either a 75mm or 90mm oil filter, an OC8127 air filter, or two BKR4E OE6037A spark plugs. You can also purchase parts from our partner sites.

  • What type of oil is recommended for my generator?

    There are three different types of oil we recommend for generator maintenance. The right type for your unit depends on the temperature range in your climate. SAE 30 is suitable for warmer climates, as it is designed for temperatures above 32°F or 0°C. 10W-30 is suitable for cold weather, as it works well in temperatures of 40°F to -10°F (or 4°C to -23°C). Synthetic 5W-30 is suitable for all temperatures. When you purchase a maintenance kit, two quarts of the correct oil is included—this makes the decision easy!

  • How do I install a maintenance kit?

    Installing a backup or portable maintenance kit is easy. It involves changing the oil, air filter, and spark plugs. To change the oil, remove the oil tank’s cap. Using a dipstick and the provided cloth, swipe the stick with the cloth to check the soil level of the oil and confirm it needs to be changed. Next, hold the funnel up to the open cap area and slowly pour the quart of oil into the funnel. Take care not to overfill the tank. When you are finished filling the tank, screw the cap back on the oil tank. Take out the old oil filter and replace it with the new one included in the kit—placing just a few drops of the new oil on it first to keep it lubricated. Next, do the same with the air filter, also included in the kit. When you are finished changing the oil, be sure to use a clean rag or paper towels to wipe off any excess oil on or around the unit.

    The final thing to do to complete the maintenance kit installation is change the spark plugs. First, remove the existing spark plugs. Disconnect the spark plug lead and clean around the area. Remove the old spark plugs using the spark plug socket. Next, use a spark plug gauge to measure the gap and adjust it if necessary. Then install the new plugs, tightening but not overtightening them.

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