Yep, your Spot on with the Seal Protector Jack:)
Well noted the lock washer has lost its curve and tension ability. .
But The thing that I found strange was the blade plate is clearly worn on both mating surfaces, but the mating surface of the boss remains rusty. I would have expected both surfaces to show signs of friction wear. It would have to be so loose that the weight of the plate kept it off the boss surface. But if this was the case, then he would have noticed his arm being ripped off when he tried to start it....hmmm.
