Service Literature for MERCURY PONTOON-BIGFOOT,879 GEARCASE 60 ELPTO/BF
this is what comes up on MercNet... won't let me open up tha manual for some reason though.. which would give year and model number.
here's your manual....http://boatinfo.no/lib/mercury/manuals/45jet-50-55-60.html#/0
did find that serial number is '96
a lot (not all) of merc/mariners will have it stamped in tha block welsh plug...