I just paid $850 for one and thats a good deal!
55 hp.
the mercury serial that starts with OD started from 1992 -1995
1995
75 to 80 pounds
About 70 lbs.
The 1995 model, 25 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
A 9.9 hp Mercury, serial number OG031959, is a 1995 year model outboard.
change your thermostat
1995
A 90 hp Mercury outboard, serial number OG242239, would be a 1995 year model.
I believe it is a 1995. Have a look on http://www.outboard-engine.com . They have information about years and serial numbers.
I have the same motor on my 1996 Cajun, motor built in 1995.