I have another engine I'd like to find out more about. It's a Mercury "Merc 200", serial number 4714544 that is a 20 horsepower engine. It looks like it is circa late 70's but runs really good. If anyone knows the year and any tidbits about this motor I would appreciate it. Also, the rudder zinc is missing off of it but the mounting bracket for it is an odd shape (half circle, half square). Not the typical round style that I have usually seen, and I've not been able to find one that fits that shape. Does it matter what shape the zinc is as long as I have one on there at least? Thanks
