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Tecumseh
Lawn & Garden Engine

Model # TYPE 643-21A Official Tecumseh engine

Here are the diagrams and repair parts for Official Tecumseh TYPE-643-21A engine, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 122 parts  |
/carb Float 631023
#14

Carburetor diagram

/carb float

Part #631023

The manufacturer no longer makes this part, and there's no substitute part

Cover 610118
#43

Basic engine diagram

Cover

Part #610118

The manufacturer no longer makes this part, and there's no substitute part

Clip 631022
#13

Carburetor diagram

Clip

Part #631022

The manufacturer no longer makes this part, and there's no substitute part

Seal 510105
#26

Basic engine diagram

Seal

Part #510105

The manufacturer no longer makes this part, and there's no substitute part

Dog Sprng Rh 590412
#5

Rewind starter diagram

Dog sprng rh

Part #590412

The manufacturer no longer makes this part, and there's no substitute part

Coil 30560A
#11

Magneto diagram

Coil

Part #30560A

The manufacturer no longer makes this part, and there's no substitute part

O-ring 631028
#25

Carburetor diagram

O-ring

Part #631028

The manufacturer no longer makes this part, and there's no substitute part

Piston 310230
#5

Basic engine diagram

Piston

Part #310230

The manufacturer no longer makes this part, and there's no substitute part

Ring 310167
#8

Basic engine diagram

Ring

Part #310167

The manufacturer no longer makes this part, and there's no substitute part

Gasket 510292
#38

Basic engine diagram

Gasket

Part #510292

The manufacturer no longer makes this part, and there's no substitute part

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