Oil change in a Cummins Onan RV QG 4000 generator - RV Generator Maintenance 

Also check out my video on exercising and carburetor maintenance for the Cummins Onan RV QG 4000 generator here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-355iwj83LqI.html

Thank you for this video. You made it look so easy. This was my first ever oil change!! EASY PEASY! Your video gave me the courage to try!

Great video! My RV didn’t come with the owners manual for the generator so I watched this video and it helped me.

Diggin' your videos! Excellent job. I'm at 18 hours on my 4000 Onan and will change the oil myself now that I know it's pretty easy. Thanks Lou! 👍

I so much appreciate your thoroughness. You show/explain every step and I need that. Thank you!

Thank you for taking the time to make this Video. Much appreciated.

Thanks for a great how to video. I am about to change the oil in my new generator as well. This video is great. Thank you.

Thanks for the great information!! Especially the size of the 30 torx bit and 12mm metric socket used I really appreciate it!

Job well done. Particularly how you explained every step by step. Great Channel! 👍

Thank for showing us how to seafoam and change oil! Great video.

thanks for the video! I'm getting ready to change mine and this came in super handy!

Thank you for explaining the type oil and necessary tools!

Simple and clear explanation and demonstration. Thank you!

Thanks just got my first Owen generator in my used motorhome so definitely going to change all the fluids

Great video! Thank you. Also, like your taste in watches, can’t go wrong with Invicta

Hey Lou I was looking for what oil to use on my propane generator 4000 . When I googled it, you came up first. I thought that was cool, ours is taking some time to prime up. Hope all is well. Life with ken and jane

Great video, right to the point. Thank you.

Great video Perfect instructor

Very helpful video, thank you for posting. We have the almost identical forest river model - just a few years older, our only question is how do you reset the "change oil" message" on the control center panel inside the actual RV. We can not find a reset button or any info in the manuals. Thanks for any help! John.

Thanks for the info. Just bought a used 2018 Leprechaun. Gen set has 180 hours and the oil has never been changed! I’m using Amsoil; since I’m a dealer. Gonna change now then in another 5 hours and hopefully it will flush any deposits out. It’s amazing someone will spend $100k on a motorhome and not $10 on an oil change... smh Thanks for the info again!!

Thank you for this.

thanks for the video!

Thanks, great info.

Great video! Thank you!

AWESOME VIDEO❣️ Thank you!

What about the plugs and air filter whats the recommended change times for them

Thank you. Very help full sir.

Not that I would EVER want to teach the teacher, but I did notice a couple of things from your video that will help you. First, I noticed that you were "priming" gas flow with the start button when the generator was already warm right after the oil change. Secondly, the reason it didn't start right up after the oil change (sputtered and shut down) was because it was horribly flooded. The PROPER way to shut this generator down is to only press the switch down for about 1 second it will shut down on its own. You don't need to hold it down until the engine dies out (looked like 6 or 7 seconds in your video). After flooding the carb too much on the first shut-down after your oil change you primed it unnecessarily again, totally flooding the carb again. LOL, it only took me 9 of the 13 years I've had this same Generator. it will help keep that mew genset running great. These gens can be very temperamental !! Learn how to read the codes that are given off by the number of flashes the on/off button light does. Most importantly "Exercise" this generator at least once every month for 30 minutes under some load, such as the A/C. which is about 1/2 of the max load. Lastly, myself and some others have been using Stabil 360 MARINE FORMULA fuel stabilizer. It costs a little more than the regular Stabil, but you only use half as much but it coats the system avoiding varnishing of the carb, fuel tank and inside the engine. Works like magic in all small engines too. You'll notice the difference over time. Don't buy too too,much as the shelf life is 2 years after opening. Great prices on Amazon or e-bay. i bought 32 oz bottle for $21, and I'm almost out. At 1oz per 10 gal of fuel (doubling it for winter storage) you can see we use this Gen a lot and go places where if it craps out, your going home unless you can find full hookups!! Most RV problems are self inflicted, and a part of the learning process!! After 25 years (10 retired with zero commitments other than my also retired wife!!) of RV'ing, when you think you know it all, you find out you don't!! Keep the Videos coming RV Habit!!

thank you for the great videos.

I have this unit and am doing my 30 hour break in oil change. What other videos do you have to keep this running well? Spark plug ect.. Thx, Don

Thank you for the video. My generator is giving me the over crank code. How can I fix this?

Thanks a lot! Great video!

Thanks! Thought I was going crazy when I couldn’t find the oil filter :-) that last sentence is worth it’s weight in gold lol

Very informative thank you sir

I don't know why but I lost several comments and questions. Someone asked does the generator need to be level to operate. The short answer is no. As long as your not parked on a steep incline you should be fine.

Nicely done and very good instructions. If I’m not mistaken that particular model has no oil filter?

Easy change. Good vido.

Thanks for the video!

Thank you

Thank you!

thanks very helpful

Thank you! Going to do this today. No oil filter?

Nice vid!👍🏽

Merci!

Hello. Could you suggest or recommend to me a good carburetor and fuel pump for a Onan 4000 generator? Thank you. Tom

Thank you so much.

Good job. No info packet was included when I bought my 2018 Entegra Esteem. Just a quick start guide. No info on when to exercise. What if I need to exercise in freezing weather? Will oil be ok for short runs? Again, thanks for the info. More than I get from General Rv.

Concise and well done. Thank you!

Hey i got a couple questions for you, do you have to reset the running hour meter and if so how is it done?

Nicely done. Is there an oil filter to change as well? I don't see an oil filter part number in your low bar.

Do you know what size the crush washer is (or a link to a replacement)? I have a small leak and should probably replace it.

Lou I was just wondering if you ever think about putting a fomoco drain plug on your generator

Ty made it easy

Few questions, so no oil or air filter? How do you know if it is surging? Mine is running fine but sometimes the stop button from inside the coach is not stopping the generator. Always starts when pushing start, sometimes stops when push stop, works well. I’ll need to do an oil change soon. Thanks again for the videos!

Thanks

Hi Lou, do you also have a video on how to change the spark plugs😬

Thanks for the informative video. How do you reset the hour meter?

Going to be doing full time living in our fifth wheel, will not have power for a bit, how long can this generator run on a tank of gas and is it fine to run 24/7 if needed?

So I watched a few videos on these. Do these generators have no oil filters?

Thank you! We have very similar units. We have a Coachman Leprechaun 260 DS. The CD that came with our RV nor the quick guide booklet is not as near useful as your video. I do not understand why the oil should be changed so quickly in the initial use of the unit but not going to argue. Do you have a correct listing of error codes? Our monitor shows a blinking 8. I would also like your input on how to add fresh water to the unit when dry camping. We attempted to add water using a 12V pump to the same location you add city water to unsuccessfully (gravity?) Is there another location that the pump could be utilized, or a location where you could pour gallon jugs with a funnel? Thank you in advance!

Is your RV raised by the Leveling Jacks. If so is this safe? Thanks for the video.

I heard you say "T-30 for the screws'' but I missed what size socket for the drain plug. My generator has warning placards saying do not run without panels in place, so I had to start it from inside the rig.

No oil filter on the Onan 4000 ? I didn’t see one on mine ? Onan recommends 10w 40 ?

Is that a citizen ecodrive Skyhawk on your wrist?

Great video. Big difference between 100 and 150 hours. How do you make the call?

Don't know if someone has already asked but on a NEW unit 4000 can you use Synthetic oil or should I use Onamax 15w-40

Big thanks for the video how about the air filter as I have a 4000 super quiet myself but it's not so quiet

what if you cant start the generator? can you just replace the old oil while its cold or does it have to be warm?

You're not using the primer correctly. Push and hold the primer up to 30 seconds. The longer it hasn't been run, if the air temp is cold or if it ran out of fuel, the longer you hold it down. The light does not mean it is ready to crank, but that the fuel pump is running. Notice how it started and then died quickly. The primer needed to run longer. If the generator has been run, no priming is needed. Its similar to not choking a warm engine although the primer doesn't ad fuel to the engine, it only fills the carb bowl. Doing this correctly will extend the life of the starter significantly.

When Cummins says to change after first 20-30 hours, is that regardless of the time frame? I just bought a 2 year old rv. The generator only has 17 hours on it. Should I still change the oil. It probably wasn’t changed. I would imagine it would be a good idea to change it every year even if it’s the starting oil? Thx!

What is the opening below the yellow fill plug?

What do you do with the OLD OIL?

Do you have to use the Cummins oil? Or will any do?

What size socket for the drain plug?

How often do you change the oil? Certain amount of hours?

You give the T30 size for the cover but not the drain plug socket size unless I missed it.

Does this gen have an oil filter?

My model # 4KY-6747R Spec: R When I enter the model # on the website and then the Spec: R ......the model# disappears. Can you tell me what the Spec letter represents?

So it is better to run it on a honda generator? It will run for like 5 hours on a gallon of gas.

Is there an oil filter?

What type of gas/gasoline type does it take?

HAHA. That generator sound just like a smart car engine.

How do I check the oil on the 4000 Onan gas generator evap

Crap, now I gotta buy Torx tool. Whatever happened to standardization?

t30 screws... thanks bud.. now to find a t30 stud....

Ever had generator without oil drain plug access

what about the oil filter??

why do u need to warm the engine? And also No oil filter?

Does it have a radiator

Is there not a filter to change?

SAE 30 for summer months

Why do you start the generator before letting the oil out?

Do you not change the filter??????

oil filter??

What size is the Drain plug?

What about your filter

WHAT SIZE IS THE DRAIN PLUG ??????????????

Doesn't that thing have an oil filter. I didn't see you change the oil filter.

Filter change?

so no oil filter?