Another Generac Generator Not Producing Power - Can We Fix It?

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A few weeks ago I worked on a Generac GP7500e that had stopped making power. It ended up having a bad rotor. Today another Generac GP7500e was dropped off not producing power. Same problem? Lets test it and find out. With any luck we can repair the issue and get this generator working again.
Generator Model GP7500e: 0059435
Ken's Small Engine Repair: @KensSmallEngineRepair
Ken's Video on This Generator: • Generac Gp7500E spits ...
The other Generac GP7500 no power video: • Generac GP7500E - No P...
Part 1: Generac GP7500E - No Power Output (Stator/Rotor Swap) • Generac GP7500E - No P...
Part 2: (this video)
Part 3: Generac Engine Rebuild - Wiped Camshaft Lobe • Generac Engine Rebuild...
Part 4: Generac Engine Swap - Worn Engine/Down on Power • Generac Engine Swap an...
I use Harbor Freight Super Heavy Duty Degreaser in my ultrasonic cleaner www.harborfreight.com/1-gallo...
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#GeneratorRepair #SmallEngineRepair #SmallEngine #DIY #Fixed #Troubleshooting #HowTo #Generac
Alternator, Bad Camshaft, Bad Rotor, Camshaft, Dirty Slip Rings, Fault, Fixed, Generator, Hertz, How To, How-To, Insulation Test, Load Test, No Power, Not Putting Out Power, Ohms, Repair, Resistance, Slip Rings, Small Engine, THD, Total Harmonic Distortion, Troubleshooting, Volts, Worn Lobes

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19 июл 2023

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Комментарии : 280

@RaysLaughsAndLyrics 11 месяцев назад

A great Generac Hack brought the Power Back. Thanks for sharing and a thanks to Ken's Small Engines for getting involved. Best to all.👍

@BenMitro 11 месяцев назад

The real test, should you decide to accept it, is to make 4 running machines from the three you have. As usual, entertaining and educational. Thanks.

@steveheld8869 11 месяцев назад

I know why I like watching your videos. I like debugging and trouble shooting things. I like problem solving.

@AW-Services 11 месяцев назад

Another great video, James. You make Thursdays better

@markyoung7470 11 месяцев назад

James, with the knowledge that I have learned by watching your videos. I have been able to repair 3 Generators 1 Champion stuck Value also cleaned the carburetor changed the oil and filter,2 Generac 1 with a broken set of brushes, a simple fix also cleaned the carburetor changed oil and filter, and replaced some broken motor mounts. The other one had a value spring retainer worn out. That one 4000XL required a complete value replacement due to you can no longer get the value retainer. By watching your video on removing the head and getting the repair kit which includes new values, springs, retainers, keepers, and head gasket a major improvement in my opinion. I was able to complete the job. Also cleaned the carburetor and changed the oil and filter. The worst part of that job was removing the pull starter shroud and reinstalling the carburetor and air box very tight fit with little room to work frustrating at best. The best part was when starting it one pull with choke second pull running and sounded great. Thanks for the knowledge you are a master teacher. I will keep on watching as long as you keep on teaching! The only mistake I made was shooting one of the value springs and retainer across the room slippery little suckers. 🤣🤣

@lastplacetrophy3821 11 месяцев назад

When you started listing the valve clearances, it finally clicked where the voice and format are familiar from... you're the Lockpicking Lawyer but with generators! "Little click on one, two is binding, click on three..."

@jesterr7133 11 месяцев назад

I can never determine why I am so fascinated with your videos, but they are a highlight of my week. I usually catch them in the first hour after they come out. There is something really enjoyable about learning about machines that I don't see very often in my neck of the woods. Your pa ssion for what you do makes me want to get out and work on my own junk, lol.

@larryswords6476 7 месяцев назад

I agree with you 😊

@vtecispower 11 месяцев назад

If you follow this channel keep in mind that he rarely fixes HONDA generators , nothing beats a HONDA.

@JohnSmith-yv6eq 11 месяцев назад

and the Hondas he does fix are 20 to 40 years old.. and most that have been looked after... still work.

@mjpbase1 11 месяцев назад

James, after you picked-off that little solder blob from the stater windings, I wonder if brushing on some varnish in that spot might be worthwhile.

@adamdoingthings 11 месяцев назад

You've had me watching FB marketplace to find deals on stuff to fix up. Awesome videos!

@KensSmallEngineRepair 11 месяцев назад

Glad it worked out. We never lose power for more than a few hours so I really had no use for it.

@m9ovich785 11 месяцев назад

At My old House near Town, of 43 Years I had 7 Gen Sets. 3 of which are Antique Military and 2 other Antiques I for Home Back up and 1 for Camping. In the 43 years I've lived there I've never had to run the House back up HAHAHAHAHA. Now that I am out in the Boonies and down 1 gen set. In 3 Years I've been here. I have had to Run the Back up several times.

@NY411Info 11 месяцев назад

Nice, at least 2 more plus your old one won't be scrapped.

@justinvanaulen2478 11 месяцев назад

Great video Jim. Like others have said, I guess you could buy three Generac's...or just one Honda. 🤣I'm glad you saved another one. 👍

@wjodf8067 11 месяцев назад

So nice to see you get three identical gensets to mix and match and parts swap. Now a rental truck will drop off five more on your lawn and run.

@leodanryan966 11 месяцев назад

The fact that 3 of these machines are having problems, and they are quite different from each other I wouldn't touch one with a ten foot pole.

@JohnSmith-yv6eq 11 месяцев назад

Three out of ? thousand sold... over how many years... with how many hours on average of service between them?

@leodanryan966 11 месяцев назад

@@JohnSmith-yv6eq 3 out of 3. James doesn't work on all of them, just the broken ones.

@jackpatteeuw9244 11 месяцев назад

A big THANK YOU to James for all of his awesome videos and the knowledge he has passed on ! We had a power outage the other day. After getting 4 house running on extension cords (just refrigerators and freezers). I went over to the neighbor's house (80+ yo widow) to get her running. No start ! Then I realized that someone (me?) had left the fuel on last time the generator was used (over 1 year ago) and the carburetor was likely clogged. I have always liked working on small engines, but James convinced me to buy a couple of inexpensive tools. 1) External Torx sockets (to remove carburetor studs) 2) A jet/emulsion tube screwdriver (B&S brand; I can't find Bald Eagle Gunsmithing Screwdriver Set and similar sets are much too expensive) 3) The carburetor cleaning kit with the tiny wires and brushes (cheap on Amazon) 4) Extended reach needle nose pliers (straight and 90°) 5) Extended reach small hose grip pliers. I don't have many spare parts, but when I buy gaskets and other small items I am buying a couple of extras.

@AntonioClaudioMichael 11 месяцев назад

That oil is super clean wow looks like it was well taken care of jist had issues

@jeffclark2725 11 месяцев назад

Its crazy how that works, the dead machines start multiplying, great video,

@petecell135 11 месяцев назад

love the way he ses hay guys welcome back at the start of every vid

@brianallen9810 11 месяцев назад

Can we fix it ? Of course James can fix it. I love those rocker arms.

@sofjanmustopoh7232 11 месяцев назад

Testing to be sure that the powerhead is good before taking apart is a very GOOD IDEA 😄

@Larry-kh7rw 11 месяцев назад

A Thursday morning treat! Thanks much.

@jonathanbale5410 11 месяцев назад

Makes me happy to hear metric units that side of the pond, my life would be complete when I hear centigrade instead of Fahrenheit.

@JohnSmith-yv6eq 11 месяцев назад

You'll take some heat for that comment....oh wait.....

@GerardRusso 11 месяцев назад

Ive learned so much from your channel I remember your first video

@1SmittysGarage 11 месяцев назад

Always informational and attention to detail is bar none sir! Another great video indeed! Blessings and respect!

@bulldogshouse9970 11 месяцев назад

I really do enjoy your content keep up the great work

@jg6142 11 месяцев назад

Great video looking forward for the next!

@rodneymiddleton9624 11 месяцев назад

Awesome job Jim!!!! Thanks!!!

@brianwood5220 11 месяцев назад

Excellent job once again, James. thanks for sharing.😄

@er1073 11 месяцев назад

I never doubted you James one down and one to go. Thank you for your expertise and reputation especially your neighbors and channel subscribers. Ed in Partlow Virginia.

@kerrygleeson4409 11 месяцев назад

Leaning all the time James thanks for sharing your vast knowledge 🦘

@Farm_fab 11 месяцев назад

James, a bit of rust converting primer on that stator wouldn't affect tolerances much, and it wouldn't need painting.

@heckelphon 11 месяцев назад

... or cleaning off the rust and re-lacquering?

@stephenbullock-yn3vh 11 месяцев назад

Excellent fix 👍

@daviddamico4288 11 месяцев назад

Nice work,Jim glad you got it done..

@MrTonyPiscatelle 11 месяцев назад

Another fine fix James !

@wildefox1478 11 месяцев назад

That's great you had a parts machine with a good rotor to fix this generator and it's engine will be going to fix Jason's, very nice work as always James!

@lv_woodturner3899 11 месяцев назад

Good to see the Brandon unit now working as normal. The one with the worn camshaft had to be in a very damp basement. I hate to think of the mold in that basement.

@geraldharkness8830 11 месяцев назад

your videos are so good james!

@stevendufresne9994 11 месяцев назад

Great Video Thanks James!!👍👍

@larrykelly2838 11 месяцев назад

Great video, good Gen for someone.

@deangentles4966 11 месяцев назад

Hi James it great you got all the parts with out cost mate A very nice fix thanks for sharing James

@peterouellette3874 11 месяцев назад

Excellent job, James

@loucinci3922 11 месяцев назад

Nice repair. Very entertaining. Thank you

@arthurbiringer5676 11 месяцев назад

Another award winning job!

@hartex57 11 месяцев назад

I enjoy watching you show, I also do this kind of work at home. You are very good at what you do.

@pc5569 11 месяцев назад

Thanks James...

@robertmailhos8159 11 месяцев назад

Well at least you got it to work on this one and it is going to be getting it running again 😊

@No_Way633 11 месяцев назад

Because of watching your videos I've gotten 3 of my parents old generators that haven't run in forever to run again

@estorey1465 11 месяцев назад

another excellent episode thankyou

@aerotech1bob 11 месяцев назад

Pretty good video, nice troubleshooting and techniques

@liljoeii6091 11 месяцев назад

Thank you for the video

@Bassguitarist1985 11 месяцев назад

Great rebuild James! You got a lot of machines stocked up in your garage! Hope the Hurricane season is good to you in selling them all! :-)

@rlferv 11 месяцев назад

thanks James

@adnacraigo6590 11 месяцев назад

Bravo. Good luck on the other one.

@benkanobe7500 11 месяцев назад

Great saves!

@texascottonfarmer 11 месяцев назад

👍👍👌👌 Thanks for the video.

@fixit4182 9 месяцев назад

I’m new to your channel. Thank you for the great video, I learnt lots from this. Good job

@billsimpson604 11 месяцев назад

"It doesn't have to be a good one." Love it.

@kennethyanni3852 6 месяцев назад

Great job thanks

@jamescook5738 11 месяцев назад

Found your channel bout 6 or 7 months ago. Been watching a lot of older vids. Really enjoy them. Was a mechanic in my younger years before i got grabed ahold of bout 8000 volts of electricity in 83. Both hands were Amputated. Could fix jest about any motor. Watched a vid a few weeks ago of someone in Asia that found a generator half submerged in water. On a dirt covered floor he removed everything down to the last nut n bolt. Never did he tork Anything. Wow. It ran but fer how long. You always have my full attention when I find a vid new or old. Thanks.

@Chairman750 11 месяцев назад

Hi James. Sorry to hear about your hands. I to was a mechanic in my younger years. If you look real close at that Asian video, It's not the same unit as he found. Fake repairs. He does the same thing with chainsaws, etc. Good luck to you. Take care. Ken

@obbiebeal3060 11 месяцев назад

@jamescook5738 wow ! never-the-less you are still a machinic (turn teacher) and you would be surprised at the young and obedient kids that would love to be taught all you know. 👍👍👍👍

@philliphall5198 11 месяцев назад

I will watch it 3 times 😊😊😊 That way I will not miss anything Thanks

@bjusticeforever 11 месяцев назад

Nice video, James. Your catching the bad rotor by wiggling the connections shows your experience on these. I've re-soldered the connections on a GP5000 before, not an easy task; I don't blame you for not fooling with it.

@jcondon1 11 месяцев назад

It’s fine to fix if your own equipment. Since I sell everything I repair, want to make sure it will last.

@johnclarke6647 11 месяцев назад

If you want to save the cams in four cycle engines add 10% STP Oil Treatment to the crankcase oil. It is the lack of zinc in the oil that is destroying the cams in four cycle engines.

@scottjohnson5449 11 месяцев назад

nice save... cant wait for the next one with the bad cam !!

@RuthlessMindset68 11 месяцев назад

Another Genny saved!! Can you tilt the Kill-a-watt display as it’s hard to read. Pls!

@ericvaughn1126 11 месяцев назад

Would love to see how you get a generator loaded IN (solo?) using the ramps you used to unload it out of the car. Always a 2 man job for me unless it's a super small genny.

@JohnSmith-yv6eq 11 месяцев назад

Small cheap HF 12VDC winch might be the go...anchored onto a front seat track base?

@DavidEdwards9801 11 месяцев назад

I sure hope I never have to do this but at least I can see how you did it before trying it in person.

@noelcastle3986 11 месяцев назад

Great vid as always like the method of checking camshafts simple and accurate way to determine lobe wear im impressed with the design of the tappets compared with the honda clones but obviously the camshaft metallurgy is poor chinesium . Surprising high THD especially at the crossover points of the output wave under heavy loads and just some high frequency low amplitude ripple on low load. Would like to do some study on what causes it I have my theories but would rather read some techical explainations of they are availble . Thanks again James for sharing your knowledge and wrenching skills.

@lewiemcneely9143 11 месяцев назад

Good fix and our power co-op recommends Generac gensets but I think I'll pass, seeing all those you work on. The old Coleman is a 96 and still going strong BUT I turn it over regularly and it's in a dry as it gets shed and a maintainer on the battery. It isn't as couth as the new ones but it still does it's job. And I cee you have a green Homelite 2-cycle in the floor. THAT will be interesting. A neighbor had a couple and ran them but I don't know for what purpose. I just remember them being run and me being fascinated by them.He also had an acetylene generator. And was a HAMM radio operator and worked for NASA. And had been gassed in the war. FINE guy and God Bless Yall!

@spudman9367 9 месяцев назад

When you first looked at the placement of the neutrals, that is how they come from the factory. There is a video on RU-vid titled “Un bonding the neutrals on a Generac generator” I just switched mine (same model) to floating neutral and the neutrals were just as you found yours bonded with the ground.

@edwatters6377 6 месяцев назад

My son and on worked on 2 of the same type 7500 generators with the same issues (bad engines, carbs and cams). I wish we had seen this video before we did the work.

@user-sg8op9io6j 11 месяцев назад

Good content

@jayjudd6518 11 месяцев назад

Hope ❤you get some compensation for your work. 😊fruit punch looks a lot like fuel stabilizer to me. 😊 As always I enjoy your videos. I believe generators are a poor investment in the long run. Your opinion would be interesting. 😊😮❤

@JohnSmith-yv6eq 11 месяцев назад

Would you say they were a bad investment if you had a Honda that worked well every time you really needed it in an emergency and you looked after it..... for 40 years? Do you think that might have a good ROI?

@davidjones1393 11 месяцев назад

nice

@martyb3783 11 месяцев назад

Great video as always. I thought that Generac guaranteed their generators to maintain 5% or less THD. Maybe its just their standby gensets.

@DeadKoby 11 месяцев назад

I wonder if the red stuff in the fuel tank was fuel stabilizer. I know that there's a few popular brands that are reddish in color.

@JaakkoF 5 месяцев назад

Pro tip for hitting things with a hammer: always use something in between, so that if you miss, you don't hit anything vital. A copper rod of say 1 inch in diameter and 8 inches long would be nice. Place it against the bolt head and hit the copper with the hammer. This way the hit doesn't have to be so precisely located and having copper there also doesn't magnle anything.

@spudpail 11 месяцев назад

I love your videos and I love your attention to detail and the way you explain everything you do. You have a very no nonsense approach to your videos that I find refreshing. One thing bothers me a little however. At 37:50 for example you say "the Hertz was just over 60 Hertz". I think the correct terminology should be "the frequency was just over 60 Hz. Frequency defines what you are measuring in Hz. Another example would be the same as saying "the inches was just over 60 inches" instead of "the length, (or width or distance etc.) was just over 60 inches". Another example could be "the receiver ran a yards of over 60 yards". Doesn't sound right does it?

@jcondon1 11 месяцев назад

Grammar was never my strength

@spudpail 11 месяцев назад

@@jcondon1 There is absolutely nothing wrong with your grammar! It's just the terminology thing that bothers me. It's like when someone says "I'm going to Ohm it out" instead of "I'm going to check the resistance". I'm an old school consumer electronics technician and some the stuff people say nowadays kinda freaks me out! You do a great job on your videos and I must have watched a hundred of them and I always hit the "like" button. Keep up the good work!

@lavina58 10 месяцев назад

Nice video 😊🙌👍👌🍀🇭🇷

@watermanone7567 11 месяцев назад

Nice job James. A while back you had a generator, maybe a 2 cyl, that had a low THD. Do you remember the make and model of that generator? Many thanks for another great video.

@mrobi5797 11 месяцев назад

Those Generac seems to be not the best, if I count the number of time you fix them. Great video James, as always.

@russellv6234 11 месяцев назад

they made a shit ton of those. not as many as the old powermates but still a lot

@mrobi5797 11 месяцев назад

@russellv6234 I had in the past a powermate with a Mitsubishi engine. Never had any problems, and it was reliable.

@russellv6234 11 месяцев назад

@@mrobi5797 Is there a point to what you just said or can you just not read?

@JohnSmith-yv6eq 11 месяцев назад

@@russellv6234 He is saying that the "Generac" brand is now slapped on cheap Chinese junk machines imported by scumbag Americans ripping off their fellow American people. But in the past the name meant a reasonable machine with a reasonable reliability.... so don't tar and feather an older machine of the same "name"...it may be a chance to get a good deal on an older machine?

@craigvenard2507 11 месяцев назад

Do you have the correct flux and solder for soldering aluminum to copper??

@tenexchikumba 11 месяцев назад

James the man ,, I like you

@tonygriffiths2485 11 месяцев назад

That engine looked to me to be the most stable you've had so far, it proved to be very strong after the replacement power head. Well done. Also I saw you riding somone's Harley a couple of days ago on here. Are you thinking of getting one ? They are great for going down long straight roads. Along windy roads though I would try and access a Honda CBR 1100XX. They are the best bikes on the road, not made any more so parts my have to be hunted, but brilliant nevertheless. I have a Blackbird :) At 75yrs I have no excuses :)

@MrTonyPiscatelle 11 месяцев назад

I'd match any HD I've owned including baggers against any comparable Honda on curved roads. The trick is knowing how to ride a motorcycle.

@alext8828 10 месяцев назад

I'd like to see the slip-ring/rotor connection and understand exactly why those wires can't be attached soundly. It seems impossible that they can't be fixed. I didn't know aluminum presented difficulties when soldering.

@78jog89 11 месяцев назад

New torque wrench?! Nice.

@jarektoka 11 месяцев назад

great video as usual.I wonder if I can use regular car oil in such engines. I have 15hp honda clone and 7,5hp daewoo 210series and i want use 5w40 oil( valvoline).the manual for daewoo says 5w30...

@vipvip-tf9rw 11 месяцев назад

5w40 could work, but only for hot climates, 10w30 is for normal weather and 5w30 is for cold weather

@nealrehm6895 11 месяцев назад

Good morning James, this is Neal I bought a new Generac 2500 I that is the GP 2500i. It’s a new unit and I bought it as a back up for my Honda 3000 c. Also, for my tent, camping for a quieter running machine. I’m curious as to the ramifications of the harmonic distortion could you please explain that a little further thank you.

@Mikelp73 11 месяцев назад

Hard to beat the sound of a bolt cracking loose.

@aarongrabowski3775 11 месяцев назад

Where do you find what all the proper torque value’s are at?

@vg3430 11 месяцев назад

Very informative and great videography as usual! Any chance you have a spreadsheet of normal measurement values for all the different gensets you’ve worked on through the years?

@jcondon1 11 месяцев назад

No spreadsheet. The vast majority of generators in the 5000-8000 watt range made in the last 20 years the stator comes in at 0.4 ohms +- 0.1 ohms, the rotor between 40-70 ohms, DPE 1.5 ohms (1-2.5 ohms). Not all fall into that bucket. Some rotors as low as 3 ohms is good. Some stators as high as 1 ohm is good.

@vg3430 11 месяцев назад

@@jcondon1 Thanks James…most appreciative. Great channel!

@harrywalker968 11 месяцев назад

@@jcondon1 1 thing..... ive learned from buying chinese rubbish,, allways,, check all the bolts..connections,.

@harrywalker968 11 месяцев назад

@@jcondon1 should change oil, every wk or month, depends on use.. this is why they blow up,, no one changes oil,,like there car...as well..

@MitchEllis-dn9lf Месяц назад

I asked the harbor freight store mgr to research the Bauer battery powered torq/impact wrenches he said changing the setting 1,2 or 3 merely changed the max spd of the impact and not the torque applied that does not appear to be the case on the Ryobi impact

@nordishkiel5985 11 месяцев назад

Hmm, with 3 dead Gernerac 7500 just in this video, how good are those? Is the high number of failed units because there are so many of them out there, or is the failure rate quite high?

@jcondon1 11 месяцев назад

The are no better or worse then the others out there. At least generac sell parts so they can be fixed.

@phillipdavis4507 8 месяцев назад

Where do you find the the voltage specifications for the generator? Is there a reliable book I can get on generators thank you I enjoy your videos

@JoselitoR690 11 месяцев назад

I have a generac 7000exl and I’m missing the battery box that screws under the tank cover where can I purchase one thank you love your videos

@JohnSmith-yv6eq 11 месяцев назад

According to another commenter his batteries have been shaken apart by the vibrations in the generator when it is running. Might be a good idea to have the battery able to be placed on the ground when the engine is running...and connect by longer cables to enable this?

@johnhenrycoker3794 5 месяцев назад

Learned a lot from your videos. I have a Generac XG 10000e. I did not run it for about 3 months. I changed the spark plugs and charged the battery. Tried starting, but would not start. Is there a way I can get carburetor cleaner into the cab without removing the fuel tank?

@matthewhansen5008 6 месяцев назад

I have a powermate 5700 watt that the wire coming out of the rotor going to the slip ring broke about like the one you were working on. As of yet I have been unable to find another rotor or complete power head. Best I could determine a new power head is about $500. More than I would like to spend.