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Briggs and Stratton Model Numbers

To find the where the information that is required is located on your engine, see below. Many parts may look the same but they may be different.

Briggs and Stratton Engines Briggs and Stratton Engines

Explanation of Briggs & Stratton Model Number System
Example: 303447 1234-01 01061201 (Model Type Code)

The chart below 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.
  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 110V Gear Drive

4 - Electric Starter/110V Gear Drive with Alternator

5 - Electric Starter Only 12V Gear Drive

6 - Alternator Only

7 - Electric Starter 12V Gear Drive with Alternator

8 - Vertical Pull Starter or Side Pull Starter

9 - Mechanical Starter

A - Electric Starter/12V Gear Drive with Alternator & Inverter
EXAMPLE: To Identify Model 303447
30 3 4 4 7
30 Cubic Inch Design Series 3 Horizontal Crankshaft Ball Bearing Flange Mounting Pressure Lubrication Electric Starter 12V Gear Drive With Alternator
TYPE:1234-01 The type number identifies the engine 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's 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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