How to change generator oil?

It is important to regularly maintain your generator if you want it to work properly. Maintenance will allow you to have a dependable generator. Replacing old oil is important. You may think that this is complicated. However, it is possible to do it at home.

It is important to keep the official product manual with you because you need to know details about the oil filter, suggested type of oil, the amount of this, and frequency of oil replacement.

How do you drain oil from a generator?

The following gives you some tips on how to change generator oil:

Safety matters

Before replacing old oil and the oil filter in the generator, keep your safety in mind. It is important to put on protective gloves plus glasses. It would be best if you even had all the important equipment with you.

Heat up the old oil

You can start by warming up the old oil within the engine. This will help it drain out more efficiently. Hot oil tends to possess a much more liquid consistency.

You will have to start the generator and allow it to run for some minutes. When a couple of minutes have passed, the old oil must be warm enough to allow you to turn the generator off. By doing heat up the old oil you can complete oil changes more easily.

Blocks to place the generator

Get some identical blocks, then place these on a level surface. Put the generator on blocks, allowing a free space beneath the oil drain plug. The machine must be well seated stable, and it should not fall off the blocks.

Unplug spark wire

When the generators are on stable blocks, find the spark plug, then unplug it. Because we do not want to let the generator start accidentally, use the instruction manual to find out where the spark plus is.

Remove the wire which is connected to the spark plug first. Do this step by safely grabbing the spark wire boot. Twist this in either direction, then pull off. It would help if you did this at the same time.

Secure the wire in a place upon the generator so that it does not contact your spark plug when altering the oil.

Drain the old oil

If you want to replace old oil, you need to drain it. Find the oil drain plug. The drain plug and parts around it may be dirty, and if this is so, you should wipe away oil residue and grime. Put an oil pan or some empty canister beneath the drain plug so that We can catch all the oil from your generator’s body.

You may even remove the oil filter cap so that draining old oil can be quicker. Be sure that nothing goes into the opening.

When the drain pan is within the place to catch oil pouring out of the generator, you need to remove your oil drain plug. You can use a ratchet here. When it is loose, remove the ratchet and socket. Unscrew the rest of the threading manually. Old oil begins to drain out of the generator’s engine when the plug is removed.

Change previous oil filter

A generator with an oil filter is also important to replace this. Running new oil in an old and dirty filter is not suggested.

If you replace the oil and filter together, this may increase the generator’s life and reduce the chances of the engine malfunctioning. A high-quality oil filter wrench is needed here. Gently get hold of the oil filter within the wrench, then loosen this slowly.

When loose, we recommend that you remove the wrench then do the unscrewing left manually. It may be common for the oil filter to be hot; therefore, wear protective gloves.

The oil can pour out of the opening, placing the drain pan beneath the filter.

Look carefully at the sealing surface upon the oil filter adapter to see debris or gasket material. Make it clean. Get hold of the new filter, then lightly lubricate the gasket with new engine oil. Begin installing by screwing this in manually until the gasket can contact the filter adapter. You can read the owner’s guide or manual if you are confused.

Take the wrench to tighten the filter an extra 1/2 to around 3/4 turn. Prepare to get rid of used motor oil and even the oil filter at local auto parts stores or manufacturers and service stations.

Refill new oil

When the new filter is properly in place, reinstall the old drain plug back within its place. Screw this in manually and tighten this using a socket wrench. Always remove the oil fill cap, then insert a funnel.

It is recommended that you slowly pour in new oil within the generator. Keep in mind that the type of oil and its needed volume tend to be different for the various brands and engine models. This is why you should look at the official owner’s manual here. It will be outlined how much oil is needed to be poured in.

When the needed amount of oil is poured in, remove the funnel, then close your oil fill cap. If you are confused, you can look at a video of this being done. It is a rule of thumb that you follow all instructions carefully according to the user’s manual. Get the specific oil with the right viscosity for your portable generator.

Put spark plug wire in place

Finally, re-connect the spark plug wire. It should be in the right position.

Reattach any covers then begin the generator. Allow it to run for some minutes. Turn it down then re-check whether the oil level is in the recommended range.

Items you need to change generator Oil

Items you need to change generator Oil

STP 18588 4-Cycle Oil - New oil

 in stock
as of October 4, 2022 10:42 pm


  • Engineered with Anti-Wear Technology that provides engine part lubrication and reduced engine wear
  • All-weather synthetic blend formula promotes easier starts all year
  • Antioxidants fight thermal breakdown to enhance oil durability
  • Viscosity index improver helps reduce oil consumption
  • Detergents help keep engine components clean and control carbon deposits

Protective goggles

 in stock
13 new from $11.50
2 used from $12.12
Free shipping
as of October 4, 2022 10:42 pm


  • DEWALT tough Coat hard coated lens provides tough protection against scratches
  • DEWALT Xtra clear anti-fog lens coating provides tough protection against fogging
  • Soft, dual injected rubber conforms to the face to provide a high level protection from dust and debris
  • Adjustable, elastic cloth head strap provides a comfortable fit
  • Ventilation channels allow breathability and added protection against fogging

Ratchet & oil filter wrench

$19.99  in stock
as of October 4, 2022 10:42 pm


  • Versatile Application - The oil filter wrench set can be adjust to remover the filters from 2-1/8 To 4-1/2 inch in all kinds of vehicles to make removal easy.Three jaws made from heat-treated carbon steel and finished with a durable silver oxide, grasp filters tightly as you apply pressure with a 3/8 in. ratchet.Low profile design allows this filter wrench to grip better in tight areas
  • Sturdy Material - The oil filter wrench is made of heat-treated 45# carbon steel. This kind of material is much stronger than the normal materials. With the shinning painting on the surface, the filter wrench is totally rust and corrosion resistant
  • Easy to use - Changing an oil filter is easily done if you have Moker oil filter wrench set cause it is adjustable simply adjust it on the filter by turning it then with a ratchet loose it up.Use this adjustable oil filter wrench on all spin-on oil filters from 54-115mm to quickly remove your oil filter no matter where you go.Just press a button to lock off socket or not, simple and solid, increase mounting and dismounting oil filter efficiency
  • Special Design - The oil filter wrench is specially designed with three jaws. These three jaws will catch the filter more tightly. This tool screws on naturally, thanks to its 2-way operational attributes
  • What Is Included - The oil filter wrench set comes with a adjustable 3 jaw oil filter wrench and 3/8" drive 72 tooth quick release ratchet,convenient storage case included. Helping to prevent them from getting lost

Socket wrench

 in stock
2 used from $14.60
Free shipping
as of October 4, 2022 10:42 pm


  • ENOUGH FOR YOU - Includes 10 Cr-V Metric Sockets 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm on 10 collecting holders, each socket is labeled with the size which makes organizing easy.
  • LONG LIFE - Our reversible drive sockets set are all made from premium quality chrome vanadium steel, and its mirror chrome plated finish perfectly achieved outstanding strength and wear resistant.
  • PROFESSIONAL RATCHET HANDLE - Ergonomic easy-grip ratcheting handle could be quickly released, make you comfortably reverse the switch and let the product exceptional durability.
  • EXTENSION BARS - Includes 100 mm drive extension bar which is also made from chrome vanadium steel, great for working in hard-to-reach areas.
  • WELL ORGANIZE - Plastic storage rack keep all your sockets organized without a mess! Won't be lost anymore! Makes for a beautiful unique gift for men on various occasions like Father's Day, Birthday or anniversary. Perfect for Home, Metal or Wood Workers, Builders, Garage Workshop, Car Mechanics, Hobbyists, DIY.

Oil funnel

 in stock
3 new from $7.50
1 used from $8.99
Free shipping
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  • INNOVATIVE DESIGN - The shielded tube structure of this round plastic funnel set prevents any dust or debris from getting in, while the wide neck allows fluid to be poured at any angle.
  • MULTI FUNCTIONAL - These funnels for automotive use aren't just for cars! Use it in restaurants, the workplace, or your garage. Change oil, pour engine fuel, or use it for any other fluid transmission you need.
  • EASY TO USE - This flexible funnel set of 4 is simple, safe, and suitable for just about any project. Simply insert it into the tank or container of your choice, and pour in liquid. Leak-free, barrier-free, spill-free!
  • PORTABLE & EASY STORAGE - Get funnels for kitchen use that can do it all. Lightweight and sturdy, you can take this fuel funnel on the road or into work. When you're done, hang it up for easy storage.
  • DURABLE - Robust and corrosion-resistant, this high quality large funnel set will help you smoothly transfer any kind of liquid for years to come.

Insulated Electrician Screwdriver

$24.85  in stock
as of October 4, 2022 10:42 pm


  • 【BRAND】KUNTICA -【Security】Each Insulated screwdriver is individually tested and Insulated to 1000 volts AC. GS certified guarantee safe working standards of 1000 Volts.
  • 【Premium Material】KUNTICA Insulated Screwdriver Set adopt Chrome Vanadium Steel Blade,stronger and more durable than standard steel, offer more strong torque and resilience to prevent stripping. Black Screwdriver Tip increased corrosion protection and accurate fit into fastener.
  • 【Ergonomic Design& Magnetic Tip】The grip is made of PP and TPR material, which make it soft and comfortable enough. Ergonomically designed non-slip handles are more suitable for hand shapes and can complete tasks quickly and easily. Magnetic tip screwdriver can be easily keep screws stuck to them and improve your work efficiency.
  • 【Different size】KUNTICA 9 PCS Insulated Electrician Screwdrivers Set with 3 Phillips screwdrivers and 4 Slotted screwdrivers, it also contains Voltage Tester and Demagnetizer/Magnetizer. They are capable of meeting your various needs.
  • 【Multi-Purpose Use】KUNTICA 9 PCS Insulated Screwdrivers Set are suitable for electricians, building computers, and working with breakers or electronics, electrical fields.Screwdrivers are kept in a portable case which provides quick access, well organization and easy storage for you.

Vessel Sink Pop Up Drain With Detachable Basket Stopper

$25.00  in stock
as of October 4, 2022 10:42 pm


  • 【BUILD-IN STRAINER】Unlike regular puch button drain,this drain stopper has a anti-clogging basket strainer inside that neatly collecting hairs and prevents the drain from clogging up,stuff will not get into the drain, such as jewelry, ring, dirt and so on.
  • 【PREMIUM MATERIAL】Anti-explosion and anti-cracking thickened stainless steel, integrally-molded and seamless, no water leakage phenomenon.
  • 【No WATER LEAKAGE】Thickened stepped silica-gel gasket, no glue needed,Oxidation resistance and leakage proofing.
  • 【EASY INSTALLATION】Anyone can install a pop up drain due to its simple construction,no tools required, the thickened and extended nut allow it to be mounted by bare hand.
  • 【BEAUTIFUL FINISH】Industry leading oil rubbed bronze finish, build to resist daily scratches, corrosions and tarnishing.

New oil filter

 in stock
12 new from $10.29
5 used from $10.40
Free shipping
as of October 4, 2022 10:42 pm


  • This part is compatible with models including; 006237-0,006240-0,006437-0,006243-0,006244-0,006241-0,006242-0
  • This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including; 070185F
  • Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Generac
  • This oil filter (part number 070185E) is for generators
  • Wear work gloves to protect your hands when installing this part

Clean brush & towel

$11.97  in stock
as of October 4, 2022 10:42 pm


  • 【Best Brushes Combination】:2 pcs Track Cleaning Brush with Sponge,2 pcs dustpan clean brush, 1pcs swan shape window track cleaning brush, 1 pcs window blind brush, 1 pcs white handle groove gap brush.1 pcs household appliance brush,meet your different requirements for clean all stubborn dirty gap as easily as a professional.
  • 【Durable Material】:Window or Sliding Door Track Cleaning Brush are composed of handles in premium ABS plastic and the bristles in polypropylene,which are free of pollution and durability.
  • 【Design Features】:New design Track Cleaning Brush with Sponge is easy to clean Dusty window blinds and remove dust,NO LONGER cleaning the blinds one by one,Different kinds of crevice brushes will help you destroy dust in any hidden gap.
  • 【Widely used】:Use these tools to clean window grooves, window blinds, air Conditioner,car vents, sliding door / shower door tracks, tile lines,computer keyboards, gas stove, sink, faucet, toilet switch, bathtub, etc.
  • 【Easy to Clean and Store】:The cleaner brush have strong flexibility, wear resistance and heat deflection.After being dirty, wash with water to restore cleanliness as newWith hanging hole can hang up and occupy less space.

Protective gloves

$185.00  in stock
2 new from $185.00
Free shipping
as of October 4, 2022 10:42 pm


  • KIT INCLUDES: Pair of Class 00 Rubber Voltage Insulating Gloves; Pair of 10" Leather Protectors for gloves; Glove bag for easy storage
  • TESTED: Each pair of rubber voltage insulating gloves has a maximum use voltage of 500V AC/ 750V DC and is newly tested and stamped with test date; Rubber Voltage Insulating Gloves should be worn with leather protectors
  • COMPLIANT - Rubber Voltage Gloves are NFPA 70E-2015 compliant for arc flash; CSA Z462-15 compliant for arc flash (Canada); ANSI/ASTM D120, Class 00, Type 1; Max use voltage 500V AC/750V DC
  • ENHANCED PROTECTION - Ideal for arc flash & general FR applications; Utility Workers; Linemen; Constuction Workers; Power Generation; Electricians; Electrical Cooperatives; Contractors
  • SIZING - Available in sizes 8-12; To ensure you're ordering the correct glove size, measure the circumference around your palm.

How often should generator oil be changed?

Every generator requires an oil change every period of time. Time depends on many things like the size, type, and how often you’re running the generator every day. If you need to change the oil for your small generator like Champion 2000 Watt Inverter Generator then You can do it after 80-100 hours of Use. But if you have a large diesel then you can run 500-700 hours. There is no actual Number.  It’s really important to let the generator cool down before the oil change. Also, It’s recommended to replace the oil filter at the same time as the Oil change.

What happens if you don’t change generator oil?

If the oil hasn’t been changed for a long time, it will start to gel or solidify and eventually turn into sludge. In this case, the oil does not reach all parts of the engine, which causes a shortage of oil in the crankshafts, bearings, camshafts, and other valve train components. So for safety change your generator oil regularly.