Question about Generac 13,000 Watt / 13,000 Watt Home Standby Generator

1 Answer

Generac 40kw single phase generator starter engages after 30sec of running

I bought a used Generac Generator and the starter wants to engage after 30 sec of running ,I checked the voltage reg and I have 158 or so vac on the 15 and 16 wire , also I see no hertz on the frequency meter ,My main breaker on unit is off also, not sure hw many volts I should have out of the reg, and why I dont see Hertz

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 575 Answers

For the over voltage there is an adjustment on the control board.
Should be tested with a load something plugged in.
The hertz might just come on when under load and adjusted too.
If you need more give a model number and whether it is 13kw or 40kw.

Posted on May 06, 2013

Testimonial: "I see an adjust ment on the votage regulator but I didnt know what voltage to set it to ,I read somewhere that the Hertz needed to be adjusted first then the voltage, the model is a 004748-0 ser is 3655247,you say its high ,would high votage couse a starter to engage after running already"


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 5 Answers

SOURCE: Bought new XP8000e

Most people don't buy a transfer switch because they cost almost as much as the generator. Lowe's sells a very inexpensive one that will work for most people. It is made by GE and costs $92. Lowe's Item #: 42210 Model: TM860S. Good for 60 amps and 8 circuits. It takes standard GE half size breakers but includes the 60 amp main breakers (which are also standard but make use of a novel device that ensures you can't send power back up the pole). It's a great little design and if a breaker ever fails, you can get a replacement at Lowe's or Home Depot.


Posted on Dec 14, 2008

  • 79 Answers

SOURCE: No voltage output

It is possible that your voltage regulator is shot but before purchasing the volt regulator try flashing the fields first and make sure the brushes and rings are clean.

Posted on May 12, 2009

  • 225 Answers

SOURCE: generator not charging

look where you plug items in for power there should be a little circuit breaker there (a little black button) puss it in you should be ready to go.

Posted on May 31, 2009

  • 30 Answers

SOURCE: my standby generator is just cranking but wont turn all the way

If it was installed only five months ago, it should still be under warranty. Call Home Depot and have them send out a repair person.

Posted on Jul 01, 2009

  • 26 Answers

SOURCE: how do i flash my generac 5000 power plus generator

its the rotor ,the stater ,voltage regulateor or control board. i fix these everyday. it also just be the brushes.

Posted on Jul 14, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 20kw generac standby generator, where the starter tries to engage after the generator starts up and is running. Only has 316 running hours. Installed new starter in 2016.

The starter pinion drive gear is sticking.... its the smaller gear on the shaft that moves up and down to engage the flywheel gear and start the motor. Carefully put a LITTLE hi temp grease on the shift splines (curved ones) and see how much that helps. The gear is not staying "retracted"..if this doesn't help.. the spring that pushes the gear back down may not be strong enough...(you could always fix both)

Jun 21, 2017 | Generac Electrical Supplies

1 Answer

What kind of oil do you use

Judy, Generac portable generator oil recommendations. Above 40°F, use SAE 30. Below 40°F and down to 10°F, use 10W-30. Below 10°F, use synthetic 5W-30. Oil should be changed after the first 8 hours of operation and every 200 hours of run time thereafter.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Best oil for Generac generator Lawn Mower and Small Engine Bob Is The Oil...

Generac Generator Oil Change

Apr 18, 2016 | Generac Electrical Supplies

1 Answer

I purchased a generac 22 kw 3 phase 120/240 volt generator. I was surprised to find that it had a wild leg. Can i change the leads on the stator output to eliminate the high leg and get straight 120/208...

This unit is wired 120-240V 3 phase Delta. if you are using on it 120/208V 3 phase application it will need to be re-tapped. If you are using it in a home 120-240V single phase it will need re-tapping, Do NOT just use 2 legs, as this will cause rotor imbalance and wear out the rotor bearings, and odd ball currents to flow. If there are 12 leads coming off the stator it can be reconnected. If not you are stuck with it, except by using a transformer

Dec 15, 2013 | Generac Generator QT02224JNAX QuietSource...

1 Answer

Generac 17kw standby generator, starter will not engage into engine, just spins

If it spins and will not engage it needs removing and the bendix gear on the starter is probably worn or damaged

Aug 05, 2013 | Generac 100 Amp 120/240-Volt Transfer...

1 Answer

Under voltage alarm /shutdown on generac 10 kw gen.

The brushes on Generac automatic units are most likely not lined up with the slip rings and will wear down and burn out very fast. There is no way of checking this during assenbly because they are hidden from view and the generator has to be dismantled to be able to replace them. It's an extremely poor design and Genrac should face a class action lawsuit for producing this piece of junk.

Sep 18, 2012 | Generac 6051 Guardian Series Air-Cooled...

1 Answer

A new Generac Centurion 36kW unit is producing 350 volts across phase A & B and 175 volts from each phase to nuetral/ground. I need 120/240 volts.

Hello, seeing how this is a new generator, I would have the company either replace the unit or have a certified tech (factory) set the voltage. My first check would be that the voltage regulator is not functioning, or is set incorrectly. I have worked on generac for 30 years. My suggestions are because of warranty issues. You might void your warranty if you try to set the voltage. Just curious, when you discovered this, was there a load connected? Also, I would make sure by checking line voltage with my multimeter to verify it is functioning properly. Sometimes a Digital Meter can give false readings. Do not put a load on the generator, I would connect a 100w light bulb to a phase - neutral connection as not to damage household equipment. Please feel free to contact again if there are more questions.

Jan 14, 2011 | Electrical Supplies

1 Answer

How to start a gas generator (should the choke be in or out, to the right or the left before starting

Most Generac generators have a lever for the choke that pulls out. So if the generator is being started for the first use or cold you should choke when starting . Let it run for 30-45 sec. then push it in . Once the engine has been run or warm you dont need to choke every time when starting .

Nov 04, 2010 | Generac Power Systems Generac 0057890 3250...

1 Answer

Generac EPS-15 attempts to engage the starter while running

I work on these everyday. You most likely have a bad rotor or stater if the starter engages while running and no output. The no out put is making the generator think its not running causing it to try and start. If its not that then its the control board or voltage regulator.

Apr 07, 2009 | Generac 13,000 Watt / 13,000 Watt Home...

2 Answers

Generator will not start

Is the oil sump full? Has it been run with out oil? You can do an amp draw test on the starter. Should be 60 amps or so. Can you roll the engine by hand? If engine turns free pull the starter out and bench test it with jumper cables. Positive cable to cable lug and negative cable on the starter case. Hang on to it, lots of torque. If the stater turns slow or gets hot it is probably bad.

Mar 25, 2009 | Generac 13,000 Watt / 13,000 Watt Home...

Not finding what you are looking for?
Generac 13,000 Watt  / 13,000 Watt  Home Standby Generator Logo

135 people viewed this question

Ask a Question

Usually answered in minutes!

Top Generac Electrical Supplies Experts


Level 2 Expert

50 Answers

Don  Farrell
Don Farrell

Level 3 Expert

1018 Answers


Level 2 Expert

202 Answers

Are you a Generac Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides