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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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This works for me.
1. Set carb adjustments to Factory or 2-1/2 turns.
2. Get engine running and adjust so Idle and Full RPM is acheaved without stumbling.
3. Apply load (Turn deck on) and fine adjust till the engine is in the "sweet zone" not laboring.

Do step 3 at operating temp. I have found that I have to re-adjust if I did these in 50-60 Temps, then tried to cut grass in 90-100 temps.

Most of my maintenance / restore work is done in the winter.
1 - 2 of 8 Posts
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