That engine is a 1988 4hp Johnson. OMC's code is the word INTRODUCES whereas each letter pertains to a number ie I=1, N-2, T=3 etc etc. The "CC" in your model number indicates "88"..... 1988
1980 - CS
1981 - CI
1982 - CN
1983 - CT
1984 - CR
1985 - CO
1986 - CD
1987 - CU
1988 - CC
1989 - CE
1990 - ES
1991 - EI
1992 - EN
1993 - ET
1994 - ER
1995 - EO
1996 - ED
1997 - EU
1998 - EC