Generac 13,000 Watt / 13,000 Watt Home Standby Generator - Answered Questions & Fixed issues

Overcrank means that it tried to start and couldn't. It will go through 5 crank cycles and then stop with this alarm. Switch to off, hit enter to clear fault and then try to start in manual. Check to make sure you have fuel and pressure is 11 to 14 in WC.

need to calibrate the main control board. 83089. also is it overspeed or overcrank? if the board does not see the right rpm or is blow a certain threshold it will think it has not started yet and shut down on overcrank.

How old is it???? Does it have a read out that tells you what's wrong?????When is the last time you did a maintaince tune up on it???? Mine is fueled by propane and I changed the oil and plugs and it's been fine since....Sometimes it's the starter/ignition..I would do a complete tuneup first, then clear codes, then try starting it up manually....If that works put it back on auto..Good Luck

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.

Are you sure about that model number?

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.

Just happened to find a copy on-line for the Generac V-Twin GT990 Engine Service Manual.E-Mail me : [email protected] and I'll send you the PDF File for that. Good luck with your repair.

Leigh, See my 5/22/12 comments on my "overspeed fault" problem resolution [Generac 43903 standby Generator overspeed indicator on starting] . If it only runs for a few seconds and then quits, you may have a similar condition to the one my unit had. A good technician should be able to diagnose the problem and determine if you have a similar failure to the one I had, or one of the other causes suggested by RSG000.

well I have a special flasher unit but I believe you can put 12 volts to the brushes while it's running. That should do it.

These type of gens have a low oil shutoff. Check the oil. Always have spare spark plugs, a cheap fix. My gen always wanted a new plug every year. Look to see if it has a fuel filter.

Hi and welcome to FixYa, I am Kelly.

With a new carb and the symptom of it starts and dies this sounds like one of the generator safety circuits is tripping the unit off line.

Safety circuits are.
1. Low Oil Pressure
2. High coolant temp
4. Under / over voltage
5. Under / over Frequency
5. Low Battery
Any one of these being activated shuts the unit down via the control board.

If you respond with a model number I will dig up the manual.

Kelly

Hi Richard,

Welcome to fixya!

Here is the manual for your generator: http://www.generator-parts.com/manuals/home-standby/0E3586.pdf

Copy and paste this web address in your browser and the document will download for you.

Hope this helps you get it fixed.
When you accept this solution, please place a vote. Thanks,

Handie Andie

sounds like the throttle linkage is binding.
joe

probably but it may be a streck 1300 watts may do it but it depends on the draw of the welder and it will be maxed out thats 13 100 watt light bulbs running at the same time use common sence

Starting fine and then surging is a result of debris in the carb float bowl in most cases. Remove the float bowl and cler out the debris or water. Also.... a clogged fuel filter can cause this same symptom as can a bad fuel pump (if equipped.) Lastly check inside the feul tank looking at the tank port to carb main fuel line for obstructions.

Check fuel flow to the carb at the carb connection. It should pass about 1 cup of fuel in less than 10 seconds. If it does not do this you have fuel supplu issues. If it does do this... for sure there is debris in the float bowl. Make sure to clean the bowl nut (if equipped.) The surging is causing voltage or frequency faults as the engine speed is not constant. (Normal for the unit to shut down when this happens)

If you have a hand held propane torch... you can use it unlighted to test for vacuum leaks with the engine running. The engine will speed up where ever there is a leak. Just barely open the torch flame control valve but do not light it. The engine should speed up as you pass near the actual air intake but no where else. I do not at this time think you have a vacuum leak. I think you have a fuel management problem via a dirty float bowl or restricted fuel supply.

Thanks for choosing FixYa,
Kelly

This manual should have what you need:

http://lawnandgarden.manualsonline.com/manuals/mfg/generac/86640.html

Click the link: The click on the image then wait for popup window... Close popup window click on get this manual.

It is published by Generac

Thanks for choosing FixYa

Kely

If the generator is installed correctly and it is running within it's continuous rated capacity, it can run indefinitely. The main thing is operating temperature. Just like a car engine, once it comes up to normal operating temperature it's cooling system should be able to keep it from overheating. But unlike a car, where the manufacturer has complete control over the installation, a standby generator could possibly be installed in a way that inhibits proper cooling. However, this is very unlikely if the unit was professionally installed. And even if it did overheat, the unit should be able to trip it's own breakers or shut itself down anyway. The only other consideration is fuel consumption. A standby generator is not an economical way to get your electricity. If it runs for several days or weeks you are going to notice the fuel bill. I hope you found this helpful.

si tiene transfer automatico solo poner un swicht en hilo 1N para cortar senal de entrada al generador del utility power que sensa la presencia de voltage en caso de falta arranca el generador en forma de prueba

The original part number your looking for is 78298 (Plastic tank valve). It has been superseded by part number 080270 and it it available here:

http://www.ordertree.com/ARI.aspx?Mfg=36&Model=9856-0%20POWERPLUS,%205,000%20Watt

http://www.ordertree.com/AddtoCart.aspx?&ProductID=78298&ProductQlfr=GEN $5.34

Part Mfg: GENERAC Part Number: GEN 78298 This Part has been superseded Part Number: GEN 080270 Price: $5.34

When you do parts searches in the future for your generator use 9856-0 (Powerplus 5000Watt) for the model number.

You can also order the 080270 tank valve here:
http://www.jackssmallengines.com/searchdb2.cfm
If you enter the part number on the search page.
$4.60

Thanks for using FixYa.

Kelly

Did you remember to set the overspeed shutdown threshold on the control board?