Along with the engine serial number, the horsepower rating is needed to detemine the year model for a Mariner outboard.
1998
1991
1990
9989819
What year is the mariner 9.9c 682cs 066674
1990
The dry weight for a 1993 model, 20 hp Mariner outboard is 112 lbs.
About 17kg.
The fuel oil ratio for a 140 hp Mariner outboard motor is 50:1. Mariner is a brand of the Mercury Marine company.
yes
it advances the power as you rev higher
its 1981 model 50/1 fuel