Pump timing kubota diesel

[briantia1968]

Was trying to find out how to set injection pump timing on a kubota 3 cylinder

Sent from my SCH-S968C using Tapatalk

 

[North Idaho Wolfman]

Which three cylinder Kubota, there are quite a few models.

If your not sure, read the cast in number that is on the block behind the injection pump, and we can see if we can figure out which model it is.

 

[Shadow]

Most smaller Kubota engines require you to do what they call a "spill test" for injection pump timing. It's a crude and inefficient way to do it in my opinion, but it does work. Removing the injection lines, and removing the plug on the bellhousing to gain access to viewing the flywheel, you'll need to turn the flywheel until you get to power stroke on cylinder #1. Depending on the model, there is a certain degree on the flywheel that that injection pump delivers fuel. As you turn the motor over, with all 3 of the delivery valves being dry, you need to roll it over slowly until #1 delivery valve JUST starts beginning filling with fuel. At that point, stop turning over the motor, and look to see at how many degrees you are on the flywheel. Depending on the spec, you may need to add or remove sealing shims, under the injection pump. Typically, the book gives you an idea of how many degrees will change depending on the thickness of the shim. Again, need the model to know for sure the spec