I was down at the boat this morning and dug through the old paperwork I have and found some info on the chain... all I have to do now is figure out what model the Gypsy is. Also noticed some maint instructions... I need to fill that bad boy with 80 weight oil.

Looks like the Gypsy is rusted on... so actually changing it may be near impossible. Apparently it was never greased right at the zerk fitting at the gypsy.