[Sergio]

The snubber is bad and You can either throw it away or buy a new one if it is still available, part #102047201.

If You look at that model wiring diagram, as long as the FNR is in either the Forward or Reverse positions, there is a complete circuit if the Solenoid is allowing current across the big posts.

The snubber is not supposed to conduct current during normal operation, it is designed to only provide a current path if an arc is created during contact opening.

As long as You don't change directions with the accelerator pressed, there is very little chance of the solenoid making or breaking connection under load so the snubber is irrelevant.