Here Are a few examples of the Identification tags you will find on your engine or generator. The underlined portions are the important numbers essential for proper parts lookup. Red is the Model number, Green is the Spec or Specification number, and the Blue is the Serial number. The serial number is seldomly needed for engine and parts. Whenever a part or assembly is not used on all types, this will be noted in the basic model parts list. If no note appears, the part will be found on all types. The type in a Clinton engine is always shown as a suffix letter following the serial number — 120883-B is an example. The new numbering system that was used in the 1960s (See Figure 2).
Clinton Engine Serial Numbers Chart
SCOTT ATWATER
1946
461....3.6 HP
467....3.6 HP
1947
470....3.6 HP
471....3.6 HP
473....7.5 HP
1948
480....3.6 HP
481....3.6 HP
483....7.5 HP
1949
480....3.6 HP
481....3.6 HP
491....4 HP shift
4971....5 HP shift
483....7.5 HP
493....7.5 HP shift
1950
1-12 500 series....3.6 HP
1-14 501 series....4 HP
1-16 507 series....5 HP
1-20 503 series....7.5 HP
1-30 509 series....16 HP
1951
1-12 510 series....3.6 HP
1-14 511 series....4 HP
1-16 517 series....5 HP
1-20 513 series....7.5 HP
1-25 518 series....10 HP
1-30 519 series....16 HP
1952
1-12 30251001....3.6 HP
1-16 37251001....5 HP
1-20 33251001....7.5 HP
1-25 38251001....10 HP
1-30 39251001....16 HP
1953
3-6 30351001....3.6 HP
5 37351001....5 HP
7.5 33351001....7.5 HP Gold Pennant
10 38351001....10 HP gold Pennant
16 39351001....16 HP
1954
Super Single 30451001....3.6 HP
5 Bail a matic 37451001....5 HP
7.5 Bail a matic 33451001....7.5 HP
10 Bail a matic 38451001....10 HP
16 Bail a matic 39451001....16 HP
1955
3.6 30551001....3.6 HP
5 Bail a matic 37551001....5 HP
7.5 Bail a matic 33551001....7.5 HP
10 Bail a matic 38551001....10 HP
16 Bail a matic 39551001....16 HP
30 Bail a matic 36551001....30 HP
1956
Sportster 30651001....3.6 HP
5 Bail a matic 37651001....5 HP
7.5 Bail a matic 33651001....7.5 HP
10 Bail a matic 38651001....10 HP
16 Bail a matic 39651001....16 HP
33 Bail a matic 36651001....33 HP
33 Elec Bail a matic 3665-3-1001....33 HP
1957
3075 30751001....3.6 HP
3775 37751001....5 HP
3375 37751001....7.5 HP
3875 38751001....10 HP
3975 39751001....16 HP
3975-3 3975-3-1001....16 HP elec
3675 36751001....40 HP
3675-3 3675-3-1001....40 HP elec
3675-5 3675-5-1001....40 HP elec
For later models see Mcculloch.
1946
461....3.6 HP
467....3.6 HP
1947
470....3.6 HP
471....3.6 HP
473....7.5 HP
1948
480....3.6 HP
481....3.6 HP
483....7.5 HP
1949
480....3.6 HP
481....3.6 HP
491....4 HP shift
4971....5 HP shift
483....7.5 HP
493....7.5 HP shift
1950
1-12 500 series....3.6 HP
1-14 501 series....4 HP
1-16 507 series....5 HP
1-20 503 series....7.5 HP
1-30 509 series....16 HP
1951
1-12 510 series....3.6 HP
1-14 511 series....4 HP
1-16 517 series....5 HP
1-20 513 series....7.5 HP
1-25 518 series....10 HP
1-30 519 series....16 HP
1952
1-12 30251001....3.6 HP
1-16 37251001....5 HP
1-20 33251001....7.5 HP
1-25 38251001....10 HP
1-30 39251001....16 HP
1953
3-6 30351001....3.6 HP
5 37351001....5 HP
7.5 33351001....7.5 HP Gold Pennant
10 38351001....10 HP gold Pennant
16 39351001....16 HP
1954
Super Single 30451001....3.6 HP
5 Bail a matic 37451001....5 HP
7.5 Bail a matic 33451001....7.5 HP
10 Bail a matic 38451001....10 HP
16 Bail a matic 39451001....16 HP
1955
3.6 30551001....3.6 HP
5 Bail a matic 37551001....5 HP
7.5 Bail a matic 33551001....7.5 HP
10 Bail a matic 38551001....10 HP
16 Bail a matic 39551001....16 HP
30 Bail a matic 36551001....30 HP
1956
Sportster 30651001....3.6 HP
5 Bail a matic 37651001....5 HP
7.5 Bail a matic 33651001....7.5 HP
10 Bail a matic 38651001....10 HP
16 Bail a matic 39651001....16 HP
33 Bail a matic 36651001....33 HP
33 Elec Bail a matic 3665-3-1001....33 HP
1957
3075 30751001....3.6 HP
3775 37751001....5 HP
3375 37751001....7.5 HP
3875 38751001....10 HP
3975 39751001....16 HP
3975-3 3975-3-1001....16 HP elec
3675 36751001....40 HP
3675-3 3675-3-1001....40 HP elec
3675-5 3675-5-1001....40 HP elec
For later models see Mcculloch.
Boat Manufacturers - Listed Alphabetically
Boat Manufacturers - Listed by Boat Type
Outboard Engine Manufacturers
Boat Part Manufacturers
Boat Manufacturers - Listed by Boat Type
Outboard Engine Manufacturers
Boat Part Manufacturers
Horsepowers by Year
1980
9 HP7.5 HP5.5 HP3.5 HP2 HP1979
9 HP7.5 HP5.5 HP3.5 HP2 HP1978
9 HP7.5 HP5.5 HP3.5 HP2 HP1.5 HP1977
9 HP7.5 HP5.5 HP3.5 HP2 HP1.5 HP1976
7.5 HP5.5 HP5 HP3.5 HP1.5 HP1975
9.9 HP7.5 HP7 HP5 HP3 HP
1.5 HP