I have just purchased a nice older Merc Mariner 30 HP electric start motor off a pontoon boat that has sat for 2 years. Put a little fuel to her, hit the key and bang, up and running and peeing like a 5 year old, On the tag says 30 ELO G89 and 417503. Would like some help for what year I got so when I need parts I know the year, Any help is appreciated, regards