My john deere 210 runs for about 40 min just fine then it dies. Then the problems begin and the engine hood is so hot I cant touch it. I can restart it and limp it back to the garage and wait for 20-3

SOURCE: Craftsman LT1000 ridign mower engine dies after 15 min-deadman on

There are several things that could be going on, but what you said in your description about the dead man switch in the seat may need your attention first. The switch it self could also be bad. After you rule this out the next thing I would check is the fuel shut off solenoid located on the carb when you turn the key on to run you should hear a click and feel it in the solenoid. After this you may have a fuel pump issue or a coil issue. but from what you I have described I believethe first 2 itmes I mentioned should fix your problem

woobie dog

• 1273 Answers
• Posted on Jul 19, 2009

SOURCE: 1976 JD 214 lawn mower Kohler engine K321AQS

When it shuts down crack the fuel cap and listen for the woosh of a vacuum on the fuel tank. If you hear this, clean the pinhole vent in the fuel cap, or replace it. Being partially plugged would cause you to be starved for fuel and could explain your issue, and why it goes away after a period of time.
Regards, --W/D--

SOURCE: 1974 John Deere 2030 diesel tractor and the engine dies

I will assume you have bled the fuel system per the owners manual to ensure no air lock in your system. This is especially critical after replacing the injector pump.

The next step is to ensure you fuel filters are good and flowing and last but probably the problem is the screen on the petcock (fuel shut off) in the fuel tank. Remove this shutoff valve and clean the screen with a fine wire brush and carburetor cleaner.

SOURCE: Engine runs fine til hot.

I think one of the intake valves, or a valve pushrod, is bent or warped. When the engine heats up, the metal expands and the valve starts sticking open. That would cause compression to be lost in one cylinder, reducing available power so things drag when you engage the blades. This would also causes air/fuel to be blown back through the intake. I think you'll need to take it to a small engine mechanic. Good luck! Please rate my solution if helpful, thanks.