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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  |
O-ring 631028
#25

Carburetor diagram

O-ring

Part #631028

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

/carb Float 631023
#14

Carburetor diagram

/carb float

Part #631023

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

Nut 650390
#50

Basic engine diagram

Nut

Part #650390

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

Spring 510109
#28

Basic engine diagram

Spring

Part #510109

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

Retainer 510106
#27

Basic engine diagram

Retainer

Part #510106

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

Washer 650761
#64

Basic engine diagram

Washer

Part #650761

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

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