Craftsman
Lawn & Garden Engine

Model # 143541142 Official Craftsman 4-cycle engine

Here are the diagrams and repair parts for Official Craftsman 143541142 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 127 parts  |

Lawn & Garden Equipment Engine Carburetor O-ring 630740
#13

Replacement parts diagram

Lawn & garden equipment engine carburetor o-ring

Part #630740

This item is not returnable
$3.64
22% OFF Phone Price : $4.64
In Stock
Troybilt Lawn & Garden Equipment Engine Tension Spring 630766
#5

Replacement parts diagram

Troybilt lawn & garden equipment engine tension spring

Part #630766

This item is not returnable
In Stock
Troybilt Lawn & Garden Equipment Engine Welch Plug 630748
#15

Replacement parts diagram

Troybilt lawn & garden equipment engine welch plug

Part #630748

This item is not returnable
In Stock
Flat Washer 650490
#71

Basic engine diagram

Flat washer

Part #650490

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

Gasket 630750
#21

Replacement parts diagram

Gasket

Part #630750

Replaced by #630750A

?
Manufacturer substitution
This part replaces 630750. Substitute parts can look different from the original.
This item is not returnable
In Stock
Tractor Accessories Shaft Lever 630904
#7

Replacement parts diagram

Tractor accessories shaft lever

Part #630904

In Stock
Lauson Lawn & Garden Equipment Engine Carburetor Valve Seat Gasket 630742
#19

Replacement parts diagram

Lauson lawn & garden equipment engine carburetor valve seat gasket

Part #630742

This item is not returnable
In Stock
Lawn & Garden Equipment Engine Choke Spring 630735
#8

Replacement parts diagram

Lawn & garden equipment engine choke spring

Part #630735

This item is not returnable
In Stock
Lauson Lawn & Garden Equipment Engine Carburetor Diaphragm 630978
#22

Replacement parts diagram

Lauson lawn & garden equipment engine carburetor diaphragm

Part #630978

This item is not returnable
$6.79
13% OFF Phone Price : $7.79
In Stock
Lauson Shutter 630758
#9

Replacement parts diagram

Lauson shutter

Part #630758

This item is not returnable
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 minutes or less

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

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…