Posted by Geo-TH,In on August 23, 2016 at 05:14:44 from (172.78.86.201):
In Reply to: Kohler dieing! posted by John M on August 22, 2016 at 15:45:46:
John M, sounds like you have an unusual problem, need to think outside the box to determine if you have a fuel or electrical issue.
I would remove the air filter and have a can of starter fluid. When engine starts missing I would give it a squirt of Starter fluid and see what happens.
What do the plugs look like? Have you replaced them yet? I had an old single cylinder briggs that would run for 3 minutes then shut off. Bad plug.
I've seen a single cylinder briggs, flat head, would run for a few minutes before it started missing and blowing black smoke. Intake valve seat recession. I had to shorten the valve stem to adjust the valve. Used valve grinding compound and lapped the valves.
If your kohler is a command, then it has hydraulic lifters. If not have you checked your valve clearance?
I bought a used kohler command with 400 hrs on it. I had to grind the valves on one head. I think the previous owner didn't change the oil. The engine started burning oil, carbon deposits under the intake valve which held the valve open just enough to mess things up.
Saw a kohler off a cub cadet. There was so much grass under the flywheel cover the one head dropped a valve seat. Remove cover and look for grass clippings, even a mouse nest blocking the cooling fins.
Think outside the box, run test to isolate your problem.
I know it gets expensive to replace parts, but that may be your only option. I'm a pack rat and stock used small engine parts. I would replace the fuel pump, plugs, ignition modules one at a time. Even clean the rust off the flywheel while replacing the ignition module.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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