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The model number tells a mechanic many things about the engine; its displacement, whether it is a horizontal or vertical shaft, the type of starter, and other things. The type number tells things about the application for the engine such as the muffler type, fuel tank, and sometimes even the type of equipment the engine was installed on. The code is sort of a serial number. It also tells when the engine was built. For most of the engines in service today, the first two numbers of the code number are the last two digits of the year of manufacture. The table below gives information about engine model numbers. The diagrams below show model, type, and code number locations for most Briggs engines. Briggs & Stratton Model Numbering System A: Cubic Inch Displacement B: Basic Design Series C: Crankshaft, Carburetor, Governor D: PTO Bearing, Reduction Gear, Auxiliary Drive, Lubrication E: Type of Starter ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -- 6
8
9
10
11
12
13
16
17
18
19
22
23
24
25
26
28
29
30
32
35
40
42
46 ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -- 0-9
A-Z ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -- 0 - Horizontal Shaft, Diaphragm Carburetor, Pneumatic Governor 1 - Horizontal Shaft, Vacu-Jet Carburetor, Pneumatic Governor 2 - Horizontal Shaft, Pulsa-Jet Carburetor, Pneumatic or Mechanical Governor 3 - Horizontal Shaft, Flo-Jet Carburetor, Pneumatic Governor 4 - Horizontal Shaft, Vacu-Jet Carburetor, Mechanical Governor 5 - Vertical Shaft, Vacu-Jet Carburetor, Pneumatic or Mechanical Governor 6 - Vertical Shaft 7 - Vertical Shaft, Flo-Jet Carburetor, Pneumatic or Mechanical Governor 8 - Vertical Shaft, Flo-Jet Carburetor, Mechanical Governor 9 - Vertical Shaft, Pulsa-Jet Carburetor, Pneumatic or Mechanical Governor ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -- 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), CW Rotation, Flange Mounting 7 - Plain Bearing, Pressure Lubrication on Vertical Shaft 8 - Plain Bearing, Auxiliary Drive (PTO) Perpendicular to Crankshaft 9 - Plain Bearing, Auxiliary Drive (PTO) Parallel to Crankshaft ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -- 0 - Without Starter 1 - Rope Starter 2 - Rewind Starter 3 - Electric Starter Only 120 Volt Gear Drive 4 - Electric Starter / Generator 12 Volt Gear Drive 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
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