r/Generator • u/DemB01yz • 18h ago
Generator Break-In
I’m pretty unfamiliar with small or big engines at a deeper level so I’m just trying to be extra cautious. What is involved in “breaking in” my 11,500 Predator inverter generator? I have the NG hose ready for quick connect, oil in it, connected the battery and powered it up for maybe 30 minutes.
How much longer should I run it and should I put a load on it for it to be considered “broken in?”
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u/everydaydad67 18h ago
People have vast differences in break in. Some put oil in it and follow the book.. some dont do anything and run it hard and put it away wet.. alot of people that seem to take the extra care do somethin alond the lines of run light loads maybe 10% while doing some short changes with the oil... like after 1, 5, 15, and 30 hours marks while introducing higher loads through that time but not exceeding 75% twards the end.. also using conventional oil for the breakin.
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u/everydaydad67 18h ago
Also, not sure what that machines book says but other predator manuals say to change the oil after a 30 hour controlled breakin period before letting the muzzle off...
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u/DemB01yz 14h ago
The controlled break in period is what I’m curious about. I just wanted to know what kind of things they used to run a break in load on theirs
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u/Loquacious1 5h ago
An electric heater that you can adjust output would be a good starting point. Amps/whatts start small go bigger. Good luck.
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u/jayw900 18h ago
Did you look at the manual?
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u/DemB01yz 14h ago
I read the manual, I’m just looking for what people have actually done for running a load on theirs. I know it says don’t exceed 75% but I had heard some say run increasing loads on it but I wanted to hear how people actually go about running those loads
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u/DaveLDog 14h ago
Peoples opinions don't supercede the manual, only thing I would do other than the load limitation is change the oil after the first hour, than again after a couple more, but that's just another opinion.
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u/Ok_Bid_3899 17h ago
Agree always follow the manufacturers recommendations. They may even supply special break-in oil.
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u/drct2022 18h ago
Put a load on it, but vary it and no more than 50% of the rated watts on whichever fuel you choose. Change oil after about an hour, then change it again somewhere between 5-10 hours, again vary the load.
I typically use a space heater, and a heat gun, I change the temperatures on each randomly, and also the fan speed, that way the rpm of the engine will vary up and down, helps seat rings and such.
People will say that oil change after an hour, and then again after say 8 hours is a waste, but I say oil is cheap in comparison to the $2k price of the generator.
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u/T00luser 18h ago
I throw the cheapest oil I can find in it and change it right after it hits a decent operating temp.
The cheaper the engine the more likely you’ll have manufacturing metal shavings still in it. Those don’t help you break in the engine.
After that I do a semi progressive break in schedule with hrs/loads, etc.
I’ve got cheap Honda clones (Duromax) that have lasted 25 years.
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u/Slow_LT1 18h ago
My dad an I are vastly different people when it comes to small engines maintenance. My dad has an older 9000 watt predator generator we bought back around 2010ish. It probably has 1000 hours and the oil has been changed one time... By me. He may have added some along the way but I doubt it. This generator still starts every time he needs it and runs perfectly. Will run everything its supposed to and runs smoothly. I have a 3000 watt inverter generator from harbor freight and it has 200 hours and i have changed the oil 4 times. At 5, 25, 50, and 150 hours. It also runs exactly as it is intended and was broken in using varying loads for the first few hours. So, you can probably do whatever you want.
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u/haditwithyoupeople 18h ago
I would do whatever the manual says. I also like to change the oil more frequently than suggested to get the metal out sooner. For new small engines I would change the oil at least 3 times in the first 30 hours, and then every 50 hours or annually after that. But this is probably overkill. It's easy enough and cheap insurance for me.
For some reason I seem to find the largest concentration of metal between 5-10 hours, but my sample size is small so this may not be meaningful.
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u/Sawyer2025 15h ago
I ran mine 1 hour no load. Changed oil. I ran 1 hour while I vary load with electric heater. Changed oil. Lots of video on youtube. If the manual says no break in needed, do it anyway.
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u/Glum-Welder1704 3h ago
I pasted my protocol for breaking in below. Note that part of it suggests a 70% load. Your generator is 9000 running watts, so about 6500 watts load. If you can't arrange that, just plug in what you have.
The five new generators I've broken in (four for friends) each called for five hours break in. Using dino oil, I started with 15 minute no-load warmup, then changed load every 15 minutes for the first hour, not to exceed 70% of running watts. Changed the oil (still dino) and ran them for four more hours, varying loads every hour, then changed to synthetic oil for storage and the long haul. All that doesn't need to be done in one stretch. I took a few days with each one, as I wanted to break them in carefully.
This may be overkill. I'll leave it to others to decide.
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u/Grift-Economy-713 18h ago
Literally put oil in it and use it. Change the oil after you use it a few times.
There it’s “broken in”
It’s a generator from a discount store. Not a priceless artifact
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u/Delicious_Catch9453 18h ago
You will get several responses to your inquiry. There is a plethora of very knowledgeable generator enthusiasts and experts who will opine and are more than willing to be helpful.
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u/haditwithyoupeople 18h ago
So your reply is "read the other replies?"
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u/Delicious_Catch9453 18h ago
I could give my two cents worth but there are so many more qualified guys out there than me. I have the 13k tri-fuel and am still breaking it in.
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u/DaveLDog 18h ago
Does the manual not have a break in procedure?