AMC Explorer 33 Operator's Manual page 24

Mower electrical system
removed by applying a solution of one part baking soda to four parts water.
A light coating of grease may be applied to all exposed terminal serfaces to
prevent corrosion.
At temperatures below 32 degrees Farenheit (0 degrees celcius),full
charge state must be maintained to prevent cell electrolyte from freezing
and causing permanent battery damage.
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