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Briggs & Stratton Numerical Designation System
Explains Briggs & Stratton Model, Type and Code Numbers
Example: Model
303447		 Type
1234-01		 Code
01061201
This chart explains the 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:
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
6
8
9
10
11
12
13
16
17
18
19
20
22
23
24
25
26
28
29
30
31
32
35
38
40
42
43
44
46
52
58
 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
on Horizontal Shaft

5 -
Plain Bearing
Gear Reduction
(6 to 1) CW Rotation
Flange Mounting

6 -
Plain Bearing
Gear Reduction
(6 to 1) CCW Rotation

7 -
Plain Bearing
Pressure Lubrication
on Vertical Shaft

8 -
Plain Bearing
Auxiliary Drive (PTO)
Perpendicular to
Crankshaft

9 -
Plain Bearing
Auxiliary Drive
Parallel to Crankshaft

 0 -
Without Starter

1 -
Rope Starter

2 -
Rewind Starter

3 -
Electric Starter Only
110 Volt Gear Drive

4 -
Electric Starter/110
Volt Gear Drive
with Alternator

5 -
Electric Starter Only
12 Volt Gear Drive

6 -
Alternator Only

7 -
Electric Starter
12 Volt Gear Drive
With Alternator

8 -
Vertical Pull Starter
or Side Pull Starter

9 -
Mechanical Starter

A -
Electric Starter/12
Volt Gear Drive with
Alternator & Inverter
Example - To identify Model 303447:
30
30 Cubic Inch 		3
Design Series 3 		4
Horizontal Crankshaft 		4
Ball Bearing
Flange Mounting
Pressure Lubrication 		7
Electric Starter
12 Volt Gear Drive
With Alternator
TYPE 1234-01, The type number identifies the engines mechanical parts, color of paint, decals, governed speed, and Original Equipment Manufacturer.

The code number identifies the assembly date of the engine. In some instances it is necessary to know the code number as well as the model and type number when performing adjustments, repairs or ordering replacement parts for an engine. Here is how it works:

CODE 01061201, The code is the manufacturing date and is read as follows:
01
YEAR 		06
MONTH 		12
DAY 		01
ASSEMBLY LINE AND MANUFACTURING PLANT

 

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