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I’ve welded with these machines for 15 years now and never experienced a problem with striking an arc with poor arc characteristic due to the rpm difference. I’ve never had an issue before with the past 4 machines I’ve owned. Everyone one of them 800-900 rpms at low idle. Also there is no AC...

The engine does not run a dpf. The EPA did dictate the RPM range according to Lincoln. I just finished adapting an old welding machine with an f162 to a V2203 without an ECU and it has no issues at low idle 800rpm and high idle at 1500rpm. So as the engine sits 1400 low idle high idle 1450-1600...

since this is a welding machine I would like idle at 800-900 when there is a load it will be in the range of 1450-1600. You are correct in it was designed to run that way for EPA reasons. Performance should remain the same as the v2403 with the same injectors bore and stroke are in other pieces...

I was afraid of that…..do know what type of program they run j1939 or whatever it may be? Or if anyone knows of someone that is able to reprogram?

Also thank you two for chiming in!!!

I would like it to idle at a lower rpm. I don’t know if you can see it in the picture, the bracket that set screws hit against are not independent. There is a weld connecting the two. Also as the rpms change the set screws and brackets they push against never move.

I believe it’s by the fuel shut off solenoid. Which is controlled by the ECU. There is also a potentiometer that allows you allow you to raise and lower your rpm. (1450-1600rpm)

Here’s closer pic

Can anyone point me in direction to find the help? Possible dealership or shop that is familiar with this style of engine. CA shops do not want to change it in fear of emissions even though it’s used in other applications at lower RPM’s.

If more information is needed I will do my best to get it. Thank you.

I’m looking for some help to lower the idle speed on a kubota v2403 that was used in a Lincoln welding machine. It has a low idle and high idle feature. Low idle rpm is 1400. High idle rpm ranges from 1450-1600 controlled by a potentiometer. The set screws located on the injection do not move...