Kubota Gr 2020 Throttle Screw

[Woodsman07]

Good Morning everyone,
My grandparents recently bought a used Kubota GR 2020 and are having issues with the tractor not idling correctly. I think the previous owner might have touched this screw. The engine is a Kohler 20HP CH640. I was hoping to compare pictures with someone else's motor to make sure the screw is set correctly.

Thank you

 

[North Idaho Wolfman]

The likelihood that another mower would have the same exact setting is highly unlikely.
I would suggest you get the WSM (aka service manual) and it will tell you what to adjust to set the idle properly.

 

[whitetiger]

Good Morning everyone,
My grandparents recently bought a used Kubota GR 2020 and are having issues with the tractor not idling correctly. I think the previous owner might have touched this screw. The engine is a Kohler 20HP CH640. I was hoping to compare pictures with someone else's motor to make sure the screw is set correctly.

Thank you

I think if you watch that screw and move the throttle to FAST, you will see this screw touch and stop the increase of RPMs.

 

[lmichael]

IIRC that is not an idle screw but a throttle limit. I MAY be wrong since it's been quite awhile since I owned a Kohler engine

 

[Woodsman07]

Okay, thank you for the advice. I plan on trying to fix it this Friday. I'll let y'all know what happens.