Our old Kubota B21 is a great workhorse. Like any machine that is worked hard, it will occasionally need repair. It died on us a few days ago and Nick traced the problem to a failed fuel cutoff solenoid. To stop a diesel engine, you interrupt the flow of fuel. This can also stop a gas engine but usually the electric spark can be interrupted to stop the engine. There is no electric spark in a diesel so the fuel cutoff is all you got. On some older machines this was done mechanically with a lever operated valve. On our tractor they got fancy and used an electrically powered solenoid. If the solenoid fails, however, there is never any fuel to the engine so it doesn't run. We bought a new solenoid valve, installed it, and we were back in business at a cost of $135.
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This was the culprit. |
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Back in business moving dirt. |
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