Lawn & Garden Engine

Model # TYPE 643-21 Official Tecumseh engine

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

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Browse Parts for
TYPE 643-21 Engine
Gasket 510274
#18

Basic engine diagram

Gasket

Part #510274

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

Clip 631022
#13

Carburetor no. 631899 diagram

Clip

Part #631022

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

Bowl Gasket 631334
#21

Carburetor no. 631899 diagram

Bowl gasket

Part #631334

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

Rewnd Startr 590420
#74

Basic engine diagram

Rewnd startr

Part #590420

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

Pistn Rng St 310190
#6

Basic engine diagram

Pistn rng st

Part #310190

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

Spring 630766
#59

Basic engine diagram

Spring

Part #630766

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

Coil 30560A
#11

Magneto no. 610832a diagram

Coil

Part #30560A

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

Brake Spring 590411
#3

Rewind starter no. 590420 diagram

Brake spring

Part #590411

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

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