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It pays to lube those fittings more than once a season. Most manuals say so, But who reads them anyway.
Check for corrosion on connections,check fuse holder, Is it leaking fluid? Have you tested switch wiring? possible bad ground on motor. check harness
it may be the eventual outcome. I don't really trust the oil injection lol.
Actually the shift switch is on the engine. The neutral safety switch is in the control box.
If the ecm does not see the engine started
Sounds like it's getting expensive, Hope issue is found soon