Post the model number and somebody can look it up. The serial number is pretty useless.
List of 50 HP Johnsons here:
http://web.archive.org/web/20010709223551/www.evinrude.com/docktalk/modref/jomodyr/JHP50.html
thats great !!!! thank you so much . now could someone please tell me where to find or what the mixture is for this engine is & also what type of oil to use in the leg ?? thanx again for all your help . oh one more thing , while trailering the unit should i lock the motor in a up right position with a rod or is the electric motor enough ?
cheers !!