Want this question answered?
1983
1987
1989 mercury black max
The serial number tag on a 200 hp Mercury outboard is located on the stern bracket, upper starboard side.
1970
1971
1969.
it is stamped on the clamp bracket
The model ID cannot be determined from the horsepower, or the serial number of a Mercury outboard. The model ID is located on the serial number tag. Mercury 200 hp models produced in 1989 are as follows..... 200L 200XL 200CXL 200XRI
Mercury is a metal element. Mass number of it is 200.
the port side clamp bracket or the freeze plug on motor
your motor is a 1975 200 20hp you can get more info here: http://www.autorepairmanuals.biz/site/573683/page/599300