Hi, I is it a 2 or 3 cylinder, and if three, does it have a wraparound cowl?
If it's an 83 Mariner there is a chance it might be same as mine, but I can' remember off the top of my head all the name suffix stuff.... If it is, there is no window and you may be looking at a Yam manual for a Merc respray or vice versa. No point in telling you about the wrong engine!