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50RZ62 kohler Generator

Starts but shuts down ,overcrank light turns on,speed sensor(lockrotor is ok

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Posted on Oct 10, 2019


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Carl Gehrke

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SOURCE: kohler 12kw generator starts but shuts down after 3sec

Your gas pressure is too low and you may not have a large enough supply pipe. You need at least 10 inches of water column with the engine running to operate an LP vapor fueled engine. Because the engine is starving for fuel, its governor opens the throttle to WOT (so it goes to high revs) but there isn't any fuel to make horsepower with so the output voltage falls and the undervoltage alarm trips.


Posted on Dec 03, 2008



  • 79 Answers

SOURCE: Hello, I have a Kohler Marine Generator that says OC on the menu when I try to start it. Any ideas?

OC stands for Over Crank. How long does it take before the genset starts?

Posted on May 07, 2009


  • 113 Answers

SOURCE: My generator runs automatically once a week. It

disconnect the battery and try again.

Posted on Nov 29, 2009


  • 1 Answer

SOURCE: Kohler confidant 4 generator will not run.

i got the same gen and with the same problem

Posted on May 06, 2010


  • 2 Answers

SOURCE: how do i reset overcrank

You turn the unit to the off position, hit enter twice on control board, and put back in manual, this should reset this fault

Posted on Sep 08, 2011

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My epic 425 will start turning but shuts down right away

Check the speed sensor an its positioning. If its ok then the motor or the motor control board is faulty.
If you wish to get some details; check the site linked here. Pull up older posts.

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1 Answer

How to diagnos Overcrank light

I don't think the over crank is a problem.
Why is it shutting off?
Find the owners manual to find out if there is some fault that will shut it down or it may be an engine problem like the choke not releasing after starting.
To find a manual online you will need the make and model number of your generator.

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Cardiozone Club HR T Error Code SI2

see the details and fix it. God bless you

Error - "SI2 At Power Up"


Indicates the OVP (Over Voltage Protection) circuit on the controller is active and belt will not move.


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I have an older 30KW Generac SG 030 1800rpm running on Nat Gas which I bought used. It has set up for several years. I installed a new PN0830890SRV master control board I bought from the local Generac...

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.

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My 1999 Trooper stopped running while I was going 60mph Now it wont start - nothing. All that happens when I turn the key is that the all the indicator lights on the dash board light up.

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Overcrank error message

The 'overcrank' error simply means it tried to start but never actually started. It cranked for an extended period. Check the fuel and starting issues you would normally check to start the engine.

If you need further help, I’m available over the phone at

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1 Answer

Abs brake light comes on after driving 20 to 40 miles. Will go off after shutting off engine for awile then comes on again after 20 to 40 miles. Why?

ABS system is self monitoring.It will perform a peliminary check on itself when you first turn the key on,thats why the light stays on for about 3 secs when you first start it up. It will also perform another check on itself after you reach speed of around 8-12 mph.
For it to come on while driving it must see something wrong at the wheel speed sensors that it knows can not be correct so it is shutting itself down. It has a digital wheel sensor in each wheel that it uses to compare side to side readings. If it sees one wheel spinning faster than the other it thinks one of the wheels is locking up and it activates. Now it could be one of the wheel speed sensors is starting to go bad or it may be something as simple as one of the tires low on air. I would check all of the air pressures in the tires first to make sure the are equal and if that is ok then I would have some one hook a scan tool to it and see what trouble codes are stored in the memory of the ABS module.

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2004 dodge durango courtesy lights.

See . Under "Brakes". It's probably the Rear Axle Speed Sensor. Easy Fix. Do-It-Yourself. Search this site or Google "Replace rear axle speed sensor 1998 Durango"

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