Depending on the year ,it usually under the 3 bolt cover on cylinder head...
1985
50:1
B128289
Model number J25REDR, is a 1996, 25hp Johnson.
No. 1997 Models 3Cylinder 25HP are 2stroke engines with a single carb.
Is there a shear on a 1975 mercury 200 (20hp) outboard motor
50:1
1984.
50:1
25hp 1972
A 25hp Mercury outboard, serial number OG027076 is a 1994 year model.
The dry weight of a 1985 model, 25hp Mercury outboard is 105 lbs.