Originally posted by rabidfish:<br />Your motor is a 1986.OMC(Johnson & Evirude) have been, since 1980 using this method for model year ID "INTRODUCES" I=1 N=2 T=3 R=4 O=5 D=6 U=7 C=8 E=9 S=0 The last digit is a model ID letter "A" "B" "C" "D" "E" all refer to a change made within the model year.