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Tecumseh
Lawn & Garden Engine

Model # HS40-55478E Official Tecumseh 4-cycle engine

Here are the diagrams and repair parts for Official Tecumseh HS40-55478E 4-cycle 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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ALL PARTS
Showing 10 of 202 parts  |
Gasket 27110
Gasket

Part #27110

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

Plug Cover 27276
#27

Basic engine diagram

Plug cover

Part #27276

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

Fuel Fitting 631807
#26

Carburetor no. 631537 diagram

Fuel fitting

Part #631807

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

Element 31410
#40

Basic engine diagram

Element

Part #31410

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

Thrtle Sprng 631279
Thrtle sprng

Part #631279

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

Governor Gear Assembly 30591
#107

Basic engine diagram

Governor gear assembly

Part #30591

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

Gasket 27677
#26

Basic engine diagram

Gasket

Part #27677

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

Screw 650665
#117

Basic engine diagram

Screw

Part #650665

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

/gvnr Shaft 30574
#106

Basic engine diagram

/gvnr shaft

Part #30574

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

Spring 31426
#156

Basic engine diagram

Spring

Part #31426

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

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