Re: year and gas/oil ratio
J = Johnson
8 = 8 HP
R = Rope Start With Tiller Steering
L = 20" Shaft Length
C = 8
O = 5
B = Model Run #
So you have a 1985 Johnson 8 HP Rope Start with Tiller steering and a 20" Shaft Length. You want to run 50:1 with TCW-3 (2-stroke) oil. Use QL77JC4 (Champion) Spark Plugs, Gap at .030".
Basher