Troubleshooting. Bypassed seat safety switch. No effect.
Turned blades by hand. They spun freely. Motor sounded like it was missing although that is hard to tell on a diesel. So...loosened fuel line on first injector and motor died. Tightened it and loosenedsecond injector...no effect...so no fuel to second injector. Loosened third injector and motor died. So diagnosis is a bad fuel pump. Ordered new pump and gasket. $110. Fingers crossed.