Wis. Stat. § 30.63: Sale and use of certain outboard motors restricted.

(1) Sale. No person may sell any new outboard motor for use in the waters of this state unless such motor is equipped with a crankcase effectively sealed to prevent the drainage of raw fuel into the waters in which the motor is operated.

(2) Use. Beginning January 1, 1990, no person may operate an outboard motor in the waters of this state unless such motor is equipped with a crankcase effectively sealed to prevent the drainage of raw fuel into the waters in which such motor is operated.