Craftsman
Lawn & Garden Engine

Model # 143579012 Official Craftsman 4-cycle engine

Here are the diagrams and repair parts for Official Craftsman 143579012 4-cycle engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

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

Search
ALL PARTS
Showing 10 of 197 parts  |

Gasket 27110
#20

Carburetor no. 631226 diagram

Gasket

Part #27110

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

Plug Cover 27276
#114

Basic engine diagram

Plug cover

Part #27276

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

Tube 27627
#100

Basic engine diagram

Tube

Part #27627

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

Gasket 27554
#25

Carburetor no. 631226 diagram

Gasket

Part #27554

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

Pipe Plug 27642
#70

Basic engine diagram

Pipe plug

Part #27642

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

Spring 31503
#9

Carburetor no. 631226 diagram

Spring

Part #31503

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

Screw 650597
#105

Basic engine diagram

Screw

Part #650597

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

Screw 650591
#106

Basic engine diagram

Screw

Part #650591

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

Crankshft Gr 31931
#13

Basic engine diagram

Crankshft gr

Part #31931

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

Gov Adj Levr 31963
#35

Basic engine diagram

Gov adj levr

Part #31963

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

Symptoms for gas ranges

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Repair difficulty
Time required
 60 minutes or less
How to replace a gas range oven control board

How to replace a gas range oven control board

These step-by-step instructions explain how to replace an oven control board on a gas range…

Repair difficulty
Time required
 15 minutes or less

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.…