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B RIGGS & S TRATTON
NUMERICAL IDENTIFICATION SYSTEM
YOUR KEY TO THE WORLD’S FINEST ENGINES
This chart explains the unique Briggs & Stratton numerical model designation system. It is possible to determine most of the
important mechanical features of the engine by merely knowing the model number. Here is how it works:
A. The first one or two digits indicate the approximate CUBIC INCH DISPLACEMENT.
B. The first digit after the displacement indicates the BASIC DESIGN SERIES, relating to
cylinder construction, ignition, general configuration, etc.
C. The second digit after the displacement indicates ORIENTATION OF CRANKSHAFT.
D. The third digit after the displacement indicates TYPE OF BEARINGS, and whether or
not the engine is equipped with REDUCTION GEAR or AUXILIARY DRIVE.
E. The last digit indicates the TYPE OF STARTER.
BRIGGS & STRATTON MODEL NUMBERING SYSTEM
TYPE 1234–01, The type number identifies the engines mechanical parts, color of paint, decals, governed speed, and Original Equipment
Manufacturer.
CODE
01061201, The code is the manufacturing date and is read as follows:
YEAR MONTH DAY ASSEMBLY LINE AND MANUFACTURING PLANT
01 06 12 01
Revised 12/08
FIRST DIGIT
AFTER DISPLACEMENT
SECOND DIGIT
AFTER DISPLACEMENT
THIRD DIGIT
AFTER DISPLACEMENT
FOURTH DIGIT
AFTER DISPLACEMENT
A B C D E
CUBIC INCH
DISPLACEMENT
BASIC
DESIGN SERIES
CRANKSHAFT
ORIENTATION
PTO BEARING,
REDUCTION GEAR,
AUXILIARY DRIVE,
LUBRICATION
TYPE OF STARTER
2
5
6
8
9
10
11
12
13
15
16
18
19
20
21
22
23
24
25
28
29
30
31
32
35
38
40
42
43
44
46
47
49
52
54
58
61
0
1
2
3
4
5
6
7
8
9
A to Z
0 to 4 - Horizontal Shaft
5 to 9 - Vertical Shaft
A to G - Horizontal Shaft
H to Z - Vertical Shaft
0 - Plain Bearing/DU
Non–Flange Mount
1 - Plain Bearing
Flange Mounting
2 - Sleeve Bearing
Flange Mounting
Splash Lube
3 - Ball Bearing
Flange Mounting
Splash Lube
4 - Ball Bearing
Flange Mounting
Pressure
Lubrication
5 - Plain Bearing
Gear Reduction
(6 to 1) CCW
Rotation
Flange Mounting
6 - Ball Bearing
Gear Reduction
(2 to 1) CCW
Rotation
7 - Plain Bearing
Pressure
Lubrication
8 - Plain Bearing
Auxiliary Drive
(PTO)
Perpendicular to
Crankshaft
9 - Plain Bearing
Auxiliary Drive
Parallel to
Crankshaft
A - Plain Bearing
Pressure
Lubrication
Without Oil Filter
0 - Without Starter
1 - Rope Starter
2 - Rewind Starter
3 - Electric Starter
Only
110 or 230 Volt
Gear Drive
4 - Electric Starter/
110 or 230 Volt
Gear Drive with
Alternator
5 - Electric Starter
Only
12 or 24 Volt
Gear Drive
6 - Alternator Only
7 - Electric Starter
12 or 24 Volt
Gear Drive with
Alternator
8 - Vertical Pull
Starter or
Side Pull Starter
9 - Mechanical
Starter
A - Electric Starter
12 or 24 Volt
Gear Drive with
Alternator and
Inverter
EXAMPLE - To identify Model 303447:
30 3 4 4 7
30 Cubic Inch Design Series 3 Horizontal Shaft Ball Bearing
Flange Mounting
Pressure Lubrication
Electric Starter
12 or 24 Volt Gear Drive
with Alternator