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Kohler Quitting

1455 Views 7 Replies 5 Participants Last post by  larrybl
I have a Kohler 321 in my Case 644 I'm having an issue with
The output shaft is hooked to a hydraulic pump and I haven't used the attachment pulley.

I got the 644 a few months back and have been slowly fixing issues as they come up. Its now mostly functional and when the engine runs properly it runs great. I ran it for a good 6 hours straight two weeks ago, then the next day it ran not as good. Doesn't use any oil, and the level is right at halfway on the stick.

I ended up swapping the oil pan for another identical one this weekend -- the previous owner stripped out both bolt holes on one side. Its now mounted properly, but an issue I noticed a little before is now much worse

It'll quit without any real rhyme or reason, most of the time like I just turned the key off. It'll then start right back up like nothing happened. Sometimes it'll sputter for a second before it dies, and if I flip the choke up it'll splutter for a few more seconds before it dies, but there's no saving it. Again, immediately after it dies it'll start back up.

Where before it did this once in a blue moon, now I can't leave it idle for more than 2 min or so before it dies off.

I replaced the fuel pump hoping that would solve it, but no go.
Next step I guess would be the carb, ideas?

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First things first, just to get them out of the way...

Remove the points cover, take a bit of sand paper, and with the points closed, slide it in and out 9-10 times, the fold the sand paper so that the smooth paper side it out, and run that through a few times, and blow the points off. Now check your points gap, and adjust as needed to get a 0.020" gap.

Then confirm the wires on the coil are tight.

After that, drop the carb bowl, make sure there is no water or debris in it.

Then check your gas cap vent, it should allow air IN easily.

Try it and see if there is any improvement.
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