2 x Yamaha Outboard Boat Engines For Sale We are selling 2 x 300HP - 4.2l V6 Yamaha Boat Engines With Controls. Condition & Servicing: Engines are in immaculate condition and have been serviced religiously, every 100 hours, by Magson Marine who were also the initial installers. Controls: Full Controls included worth R100 000. [...]