Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number

Tecumseh TYPE 643-21A engine Parts

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

Tecumseh TYPE 643-21A engine
By Schematic
By Part
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for TYPE 643-21A Engine

  • Nut/lkwshr for Tecumseh TYPE 643-21A - Part 650742

    Basic engine diagram

    Nut/lkwshr

    Part #650742

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

  • Baffle for Tecumseh TYPE 643-21A - Part 570434

    Basic engine diagram

    Baffle

    Part #570434

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

  • Spring for Tecumseh TYPE 643-21A - Part 510142

    Basic engine diagram

    Spring

    Part #510142

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

  • Felt for Tecumseh TYPE 643-21A - Part 30549

    Magneto diagram

    Felt

    Part #30549

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

  • Pulley for Tecumseh TYPE 643-21A - Part 590413A

    Rewind starter diagram

    Pulley

    Part #590413A

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

  • Screw for Tecumseh TYPE 643-21A - Part 650569

    Carburetor diagram

    Screw

    Part #650569

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

  • Magneto for Tecumseh TYPE 643-21A - Part 610832A

    Basic engine diagram

    Magneto

    Part #610832A

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

  • Screw for Tecumseh TYPE 643-21A - Part 650497

    Basic engine diagram

    Screw

    Part #650497

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

  • Pin Centring for Tecumseh TYPE 643-21A - Part 590459

    Rewind starter diagram

    Pin Centring

    Part #590459

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

  • Washer for Tecumseh TYPE 643-21A - Part 650201

    Basic engine diagram

    Washer

    Part #650201

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

Effective articles & videos to help repair your lawn & garden engines

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect....

What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts....

Parts & More

Automotive
Cd Player
Drill/Driver
Lawn Tractor Attachment
Parts
Plasma Television
Space Heater
Vhs Players & Vcrs
Wall Oven