Origin	Austria
Model Number	503 UL
Brand Name	Rotax

Rotax 503 UL DCDI 50HP

    * 2-stroke engine specially developed for recreational aircraft
    * 2 cylinders, cooled by fan
    * Piston ported intake
    * Dual capacitor discharge Ignition (DCDI)
    * Dual Bing carburetors
    * Mikuni pulse driven diaphragm fuel pump
    * Recoil or electric starter
    * Available with various exhaust system configurations
    * Operates on automotive fuel with a minimum of 87 octane rating (Canadian standards) and super 2-stroke oil of API-TC classification, automatically provided by oil injection, or premixed with a 50:1 ratio
    * Challenger owners, we make the installation of oil injection possible!
    * Time Between Overhauls (TBO): 300 hours