Let me try to clarify: The Fisher Price transmission can be modified in any way, as long as the MOTOR itself is not modifed. This extends to changing the pinion on the motor shaft itself. So, if you want, you can torch that little plastic box into a heap of smoking slag, then run your motor until it stalls and burns. That is your preference.
P.S: I do not endorse melting your gearbox and then trying to use it.
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